21000901270

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1\times {\mathrm{73721}}^1$

素因数の和:74256

約数の個数: 32

約数和(自身を含む): 38504115936

約数和(自身を除く): 17503214666

約数列:

[1, 2, 5, 10, 61, 122, 305, 467, 610, 934, 2335, 4670, 28487, 56974, 73721, 142435, 147442, 284870, 368605, 737210, 4496981, 8993962, 22484905, 34427707, 44969810, 68855414, 172138535, 344277070, 2100090127, 4200180254, 10500450635, 21000901270]

約数ペア:

[(1, 21000901270), (2, 10500450635), (5, 4200180254), (10, 2100090127), (61, 344277070), (122, 172138535), (305, 68855414), (467, 44969810), (610, 34427707), (934, 22484905), (2335, 8993962), (4670, 4496981), (28487, 737210), (56974, 368605), (73721, 284870), (142435, 147442)]