7686640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 20311200

約数和(自身を除く): 12624560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 389, 494, 520, 760, 778, 988, 1040, 1235, 1520, 1556, 1945, 1976, 2470, 3112, 3890, 3952, 4940, 5057, 6224, 7391, 7780, 9880, 10114, 14782, 15560, 19760, 20228, 25285, 29564, 31120, 36955, 40456, 50570, 59128, 73910, 80912, 96083, 101140, 118256, 147820, 192166, 202280, 295640, 384332, 404560, 480415, 591280, 768664, 960830, 1537328, 1921660, 3843320, 7686640]

約数ペア:

[(1, 7686640), (2, 3843320), (4, 1921660), (5, 1537328), (8, 960830), (10, 768664), (13, 591280), (16, 480415), (19, 404560), (20, 384332), (26, 295640), (38, 202280), (40, 192166), (52, 147820), (65, 118256), (76, 101140), (80, 96083), (95, 80912), (104, 73910), (130, 59128), (152, 50570), (190, 40456), (208, 36955), (247, 31120), (260, 29564), (304, 25285), (380, 20228), (389, 19760), (494, 15560), (520, 14782), (760, 10114), (778, 9880), (988, 7780), (1040, 7391), (1235, 6224), (1520, 5057), (1556, 4940), (1945, 3952), (1976, 3890), (2470, 3112)]