399365780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{29759}}^1$

素因数の和:29840

約数の個数: 48

約数和(自身を含む): 929940480

約数和(自身を除く): 530574700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 29759, 59518, 119036, 148795, 297590, 327349, 595180, 654698, 1309396, 1636745, 1815299, 3273490, 3630598, 6546980, 7261196, 9076495, 18152990, 19968289, 36305980, 39936578, 79873156, 99841445, 199682890, 399365780]

約数ペア:

[(1, 399365780), (2, 199682890), (4, 99841445), (5, 79873156), (10, 39936578), (11, 36305980), (20, 19968289), (22, 18152990), (44, 9076495), (55, 7261196), (61, 6546980), (110, 3630598), (122, 3273490), (220, 1815299), (244, 1636745), (305, 1309396), (610, 654698), (671, 595180), (1220, 327349), (1342, 297590), (2684, 148795), (3355, 119036), (6710, 59518), (13420, 29759)]