21000481240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{70067}}^1$

素因数の和:70264

約数の個数: 64

約数和(自身を含む): 48431001600

約数和(自身を除く): 27430520360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 127, 236, 254, 295, 472, 508, 590, 635, 1016, 1180, 1270, 2360, 2540, 5080, 7493, 14986, 29972, 37465, 59944, 70067, 74930, 140134, 149860, 280268, 299720, 350335, 560536, 700670, 1401340, 2802680, 4133953, 8267906, 8898509, 16535812, 17797018, 20669765, 33071624, 35594036, 41339530, 44492545, 71188072, 82679060, 88985090, 165358120, 177970180, 355940360, 525012031, 1050024062, 2100048124, 2625060155, 4200096248, 5250120310, 10500240620, 21000481240]

約数ペア:

[(1, 21000481240), (2, 10500240620), (4, 5250120310), (5, 4200096248), (8, 2625060155), (10, 2100048124), (20, 1050024062), (40, 525012031), (59, 355940360), (118, 177970180), (127, 165358120), (236, 88985090), (254, 82679060), (295, 71188072), (472, 44492545), (508, 41339530), (590, 35594036), (635, 33071624), (1016, 20669765), (1180, 17797018), (1270, 16535812), (2360, 8898509), (2540, 8267906), (5080, 4133953), (7493, 2802680), (14986, 1401340), (29972, 700670), (37465, 560536), (59944, 350335), (70067, 299720), (74930, 280268), (140134, 149860)]