20812140

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 120

約数和(自身を含む): 67692240

約数和(自身を除く): 46880100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 81, 87, 90, 108, 116, 135, 145, 162, 174, 180, 261, 270, 290, 324, 348, 405, 435, 443, 522, 540, 580, 783, 810, 870, 886, 1044, 1305, 1329, 1566, 1620, 1740, 1772, 2215, 2349, 2610, 2658, 3132, 3915, 3987, 4430, 4698, 5220, 5316, 6645, 7830, 7974, 8860, 9396, 11745, 11961, 12847, 13290, 15660, 15948, 19935, 23490, 23922, 25694, 26580, 35883, 38541, 39870, 46980, 47844, 51388, 59805, 64235, 71766, 77082, 79740, 115623, 119610, 128470, 143532, 154164, 179415, 192705, 231246, 239220, 256940, 346869, 358830, 385410, 462492, 578115, 693738, 717660, 770820, 1040607, 1156230, 1387476, 1734345, 2081214, 2312460, 3468690, 4162428, 5203035, 6937380, 10406070, 20812140]

約数ペア:

[(1, 20812140), (2, 10406070), (3, 6937380), (4, 5203035), (5, 4162428), (6, 3468690), (9, 2312460), (10, 2081214), (12, 1734345), (15, 1387476), (18, 1156230), (20, 1040607), (27, 770820), (29, 717660), (30, 693738), (36, 578115), (45, 462492), (54, 385410), (58, 358830), (60, 346869), (81, 256940), (87, 239220), (90, 231246), (108, 192705), (116, 179415), (135, 154164), (145, 143532), (162, 128470), (174, 119610), (180, 115623), (261, 79740), (270, 77082), (290, 71766), (324, 64235), (348, 59805), (405, 51388), (435, 47844), (443, 46980), (522, 39870), (540, 38541), (580, 35883), (783, 26580), (810, 25694), (870, 23922), (886, 23490), (1044, 19935), (1305, 15948), (1329, 15660), (1566, 13290), (1620, 12847), (1740, 11961), (1772, 11745), (2215, 9396), (2349, 8860), (2610, 7974), (2658, 7830), (3132, 6645), (3915, 5316), (3987, 5220), (4430, 4698)]