20464740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45579420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 47, 59, 60, 82, 90, 94, 118, 123, 141, 164, 177, 180, 188, 205, 235, 236, 246, 282, 295, 354, 369, 410, 423, 470, 492, 531, 564, 590, 615, 705, 708, 738, 820, 846, 885, 940, 1062, 1180, 1230, 1410, 1476, 1692, 1770, 1845, 1927, 2115, 2124, 2419, 2460, 2655, 2773, 2820, 3540, 3690, 3854, 4230, 4838, 5310, 5546, 5781, 7257, 7380, 7708, 8319, 8460, 9635, 9676, 10620, 11092, 11562, 12095, 13865, 14514, 16638, 17343, 19270, 21771, 23124, 24190, 24957, 27730, 28905, 29028, 33276, 34686, 36285, 38540, 41595, 43542, 48380, 49914, 55460, 57810, 69372, 72570, 83190, 86715, 87084, 99828, 108855, 113693, 115620, 124785, 145140, 166380, 173430, 217710, 227386, 249570, 341079, 346860, 435420, 454772, 499140, 568465, 682158, 1023237, 1136930, 1364316, 1705395, 2046474, 2273860, 3410790, 4092948, 5116185, 6821580, 10232370, 20464740]

約数ペア:

[(1, 20464740), (2, 10232370), (3, 6821580), (4, 5116185), (5, 4092948), (6, 3410790), (9, 2273860), (10, 2046474), (12, 1705395), (15, 1364316), (18, 1136930), (20, 1023237), (30, 682158), (36, 568465), (41, 499140), (45, 454772), (47, 435420), (59, 346860), (60, 341079), (82, 249570), (90, 227386), (94, 217710), (118, 173430), (123, 166380), (141, 145140), (164, 124785), (177, 115620), (180, 113693), (188, 108855), (205, 99828), (235, 87084), (236, 86715), (246, 83190), (282, 72570), (295, 69372), (354, 57810), (369, 55460), (410, 49914), (423, 48380), (470, 43542), (492, 41595), (531, 38540), (564, 36285), (590, 34686), (615, 33276), (705, 29028), (708, 28905), (738, 27730), (820, 24957), (846, 24190), (885, 23124), (940, 21771), (1062, 19270), (1180, 17343), (1230, 16638), (1410, 14514), (1476, 13865), (1692, 12095), (1770, 11562), (1845, 11092), (1927, 10620), (2115, 9676), (2124, 9635), (2419, 8460), (2460, 8319), (2655, 7708), (2773, 7380), (2820, 7257), (3540, 5781), (3690, 5546), (3854, 5310), (4230, 4838)]