778836820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{5827}}^1$

素因数の和:6040

約数の個数: 48

約数和(自身を含む): 1686017088

約数和(自身を除く): 907180268

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 163, 164, 205, 326, 410, 652, 815, 820, 1630, 3260, 5827, 6683, 11654, 13366, 23308, 26732, 29135, 33415, 58270, 66830, 116540, 133660, 238907, 477814, 949801, 955628, 1194535, 1899602, 2389070, 3799204, 4749005, 4778140, 9498010, 18996020, 38941841, 77883682, 155767364, 194709205, 389418410, 778836820]

約数ペア:

[(1, 778836820), (2, 389418410), (4, 194709205), (5, 155767364), (10, 77883682), (20, 38941841), (41, 18996020), (82, 9498010), (163, 4778140), (164, 4749005), (205, 3799204), (326, 2389070), (410, 1899602), (652, 1194535), (815, 955628), (820, 949801), (1630, 477814), (3260, 238907), (5827, 133660), (6683, 116540), (11654, 66830), (13366, 58270), (23308, 33415), (26732, 29135)]