20147133680

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4128511}}^1$

素因数の和:4128585

約数の個数: 40

約数和(自身を含む): 47610000384

約数和(自身を除く): 27462866704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 4128511, 8257022, 16514044, 20642555, 33028088, 41285110, 66056176, 82570220, 165140440, 251839171, 330280880, 503678342, 1007356684, 1259195855, 2014713368, 2518391710, 4029426736, 5036783420, 10073566840, 20147133680]

約数ペア:

[(1, 20147133680), (2, 10073566840), (4, 5036783420), (5, 4029426736), (8, 2518391710), (10, 2014713368), (16, 1259195855), (20, 1007356684), (40, 503678342), (61, 330280880), (80, 251839171), (122, 165140440), (244, 82570220), (305, 66056176), (488, 41285110), (610, 33028088), (976, 20642555), (1220, 16514044), (2440, 8257022), (4880, 4128511)]