20892780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:224

約数の個数: 144

約数和(自身を含む): 68796000

約数和(自身を除く): 47903220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 41, 45, 57, 60, 76, 82, 90, 95, 114, 123, 149, 164, 171, 180, 190, 205, 228, 246, 285, 298, 342, 369, 380, 410, 447, 492, 570, 596, 615, 684, 738, 745, 779, 820, 855, 894, 1140, 1230, 1341, 1476, 1490, 1558, 1710, 1788, 1845, 2235, 2337, 2460, 2682, 2831, 2980, 3116, 3420, 3690, 3895, 4470, 4674, 5364, 5662, 6109, 6705, 7011, 7380, 7790, 8493, 8940, 9348, 11324, 11685, 12218, 13410, 14022, 14155, 15580, 16986, 18327, 23370, 24436, 25479, 26820, 28044, 28310, 30545, 33972, 35055, 36654, 42465, 46740, 50958, 54981, 56620, 61090, 70110, 73308, 84930, 91635, 101916, 109962, 116071, 122180, 127395, 140220, 169860, 183270, 219924, 232142, 254790, 274905, 348213, 366540, 464284, 509580, 549810, 580355, 696426, 1044639, 1099620, 1160710, 1392852, 1741065, 2089278, 2321420, 3482130, 4178556, 5223195, 6964260, 10446390, 20892780]

約数ペア:

[(1, 20892780), (2, 10446390), (3, 6964260), (4, 5223195), (5, 4178556), (6, 3482130), (9, 2321420), (10, 2089278), (12, 1741065), (15, 1392852), (18, 1160710), (19, 1099620), (20, 1044639), (30, 696426), (36, 580355), (38, 549810), (41, 509580), (45, 464284), (57, 366540), (60, 348213), (76, 274905), (82, 254790), (90, 232142), (95, 219924), (114, 183270), (123, 169860), (149, 140220), (164, 127395), (171, 122180), (180, 116071), (190, 109962), (205, 101916), (228, 91635), (246, 84930), (285, 73308), (298, 70110), (342, 61090), (369, 56620), (380, 54981), (410, 50958), (447, 46740), (492, 42465), (570, 36654), (596, 35055), (615, 33972), (684, 30545), (738, 28310), (745, 28044), (779, 26820), (820, 25479), (855, 24436), (894, 23370), (1140, 18327), (1230, 16986), (1341, 15580), (1476, 14155), (1490, 14022), (1558, 13410), (1710, 12218), (1788, 11685), (1845, 11324), (2235, 9348), (2337, 8940), (2460, 8493), (2682, 7790), (2831, 7380), (2980, 7011), (3116, 6705), (3420, 6109), (3690, 5662), (3895, 5364), (4470, 4674)]