20399888210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{136811}}^1$

素因数の和:136899

約数の個数: 64

約数和(自身を含む): 41923574784

約数和(自身を除く): 21523686574

約数列:

[1, 2, 5, 10, 13, 26, 31, 37, 62, 65, 74, 130, 155, 185, 310, 370, 403, 481, 806, 962, 1147, 2015, 2294, 2405, 4030, 4810, 5735, 11470, 14911, 29822, 74555, 136811, 149110, 273622, 684055, 1368110, 1778543, 3557086, 4241141, 5062007, 8482282, 8892715, 10124014, 17785430, 21205705, 25310035, 42411410, 50620070, 55134833, 65806091, 110269666, 131612182, 156922217, 275674165, 313844434, 329030455, 551348330, 658060910, 784611085, 1569222170, 2039988821, 4079977642, 10199944105, 20399888210]

約数ペア:

[(1, 20399888210), (2, 10199944105), (5, 4079977642), (10, 2039988821), (13, 1569222170), (26, 784611085), (31, 658060910), (37, 551348330), (62, 329030455), (65, 313844434), (74, 275674165), (130, 156922217), (155, 131612182), (185, 110269666), (310, 65806091), (370, 55134833), (403, 50620070), (481, 42411410), (806, 25310035), (962, 21205705), (1147, 17785430), (2015, 10124014), (2294, 8892715), (2405, 8482282), (4030, 5062007), (4810, 4241141), (5735, 3557086), (11470, 1778543), (14911, 1368110), (29822, 684055), (74555, 273622), (136811, 149110)]