78945020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51263}}^1$

素因数の和:51290

約数の個数: 48

約数和(自身を含む): 206696448

約数和(自身を除く): 127751428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 51263, 102526, 205052, 256315, 358841, 512630, 563893, 717682, 1025260, 1127786, 1435364, 1794205, 2255572, 2819465, 3588410, 3947251, 5638930, 7176820, 7894502, 11277860, 15789004, 19736255, 39472510, 78945020]

約数ペア:

[(1, 78945020), (2, 39472510), (4, 19736255), (5, 15789004), (7, 11277860), (10, 7894502), (11, 7176820), (14, 5638930), (20, 3947251), (22, 3588410), (28, 2819465), (35, 2255572), (44, 1794205), (55, 1435364), (70, 1127786), (77, 1025260), (110, 717682), (140, 563893), (154, 512630), (220, 358841), (308, 256315), (385, 205052), (770, 102526), (1540, 51263)]