20185516980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1\times {\mathrm{971}}^1$

素因数の和:1407

約数の個数: 192

約数和(自身を含む): 63548271360

約数和(自身を除く): 43362754380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 137, 180, 270, 274, 281, 411, 540, 548, 562, 685, 822, 843, 971, 1124, 1233, 1370, 1405, 1644, 1686, 1942, 2055, 2466, 2529, 2740, 2810, 2913, 3372, 3699, 3884, 4110, 4215, 4855, 4932, 5058, 5620, 5826, 6165, 7398, 7587, 8220, 8430, 8739, 9710, 10116, 11652, 12330, 12645, 14565, 14796, 15174, 16860, 17478, 18495, 19420, 24660, 25290, 26217, 29130, 30348, 34956, 36990, 37935, 38497, 43695, 50580, 52434, 58260, 73980, 75870, 76994, 87390, 104868, 115491, 131085, 133027, 151740, 153988, 174780, 192485, 230982, 262170, 266054, 272851, 346473, 384970, 399081, 461964, 524340, 532108, 545702, 577455, 665135, 692946, 769940, 798162, 818553, 1039419, 1091404, 1154910, 1197243, 1330270, 1364255, 1385892, 1596324, 1637106, 1732365, 1995405, 2078838, 2309820, 2394486, 2455659, 2660540, 2728510, 3274212, 3464730, 3591729, 3990810, 4092765, 4157676, 4788972, 4911318, 5197095, 5457020, 5986215, 6929460, 7183458, 7366977, 7981620, 8185530, 9822636, 10394190, 11972430, 12278295, 14366916, 14733954, 16371060, 17958645, 20788380, 23944860, 24556590, 29467908, 35917290, 36834885, 37380587, 49113180, 71834580, 73669770, 74761174, 112141761, 147339540, 149522348, 186902935, 224283522, 336425283, 373805870, 448567044, 560708805, 672850566, 747611740, 1009275849, 1121417610, 1345701132, 1682126415, 2018551698, 2242835220, 3364252830, 4037103396, 5046379245, 6728505660, 10092758490, 20185516980]

約数ペア:

[(1, 20185516980), (2, 10092758490), (3, 6728505660), (4, 5046379245), (5, 4037103396), (6, 3364252830), (9, 2242835220), (10, 2018551698), (12, 1682126415), (15, 1345701132), (18, 1121417610), (20, 1009275849), (27, 747611740), (30, 672850566), (36, 560708805), (45, 448567044), (54, 373805870), (60, 336425283), (90, 224283522), (108, 186902935), (135, 149522348), (137, 147339540), (180, 112141761), (270, 74761174), (274, 73669770), (281, 71834580), (411, 49113180), (540, 37380587), (548, 36834885), (562, 35917290), (685, 29467908), (822, 24556590), (843, 23944860), (971, 20788380), (1124, 17958645), (1233, 16371060), (1370, 14733954), (1405, 14366916), (1644, 12278295), (1686, 11972430), (1942, 10394190), (2055, 9822636), (2466, 8185530), (2529, 7981620), (2740, 7366977), (2810, 7183458), (2913, 6929460), (3372, 5986215), (3699, 5457020), (3884, 5197095), (4110, 4911318), (4215, 4788972), (4855, 4157676), (4932, 4092765), (5058, 3990810), (5620, 3591729), (5826, 3464730), (6165, 3274212), (7398, 2728510), (7587, 2660540), (8220, 2455659), (8430, 2394486), (8739, 2309820), (9710, 2078838), (10116, 1995405), (11652, 1732365), (12330, 1637106), (12645, 1596324), (14565, 1385892), (14796, 1364255), (15174, 1330270), (16860, 1197243), (17478, 1154910), (18495, 1091404), (19420, 1039419), (24660, 818553), (25290, 798162), (26217, 769940), (29130, 692946), (30348, 665135), (34956, 577455), (36990, 545702), (37935, 532108), (38497, 524340), (43695, 461964), (50580, 399081), (52434, 384970), (58260, 346473), (73980, 272851), (75870, 266054), (76994, 262170), (87390, 230982), (104868, 192485), (115491, 174780), (131085, 153988), (133027, 151740)]