18820640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 29442400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 76, 80, 82, 95, 151, 152, 160, 164, 190, 205, 302, 304, 328, 380, 410, 604, 608, 656, 755, 760, 779, 820, 1208, 1312, 1510, 1520, 1558, 1640, 2416, 2869, 3020, 3040, 3116, 3280, 3895, 4832, 5738, 6040, 6191, 6232, 6560, 7790, 11476, 12080, 12382, 12464, 14345, 15580, 22952, 24160, 24764, 24928, 28690, 30955, 31160, 45904, 49528, 57380, 61910, 62320, 91808, 99056, 114760, 117629, 123820, 124640, 198112, 229520, 235258, 247640, 459040, 470516, 495280, 588145, 941032, 990560, 1176290, 1882064, 2352580, 3764128, 4705160, 9410320, 18820640]

約数ペア:

[(1, 18820640), (2, 9410320), (4, 4705160), (5, 3764128), (8, 2352580), (10, 1882064), (16, 1176290), (19, 990560), (20, 941032), (32, 588145), (38, 495280), (40, 470516), (41, 459040), (76, 247640), (80, 235258), (82, 229520), (95, 198112), (151, 124640), (152, 123820), (160, 117629), (164, 114760), (190, 99056), (205, 91808), (302, 62320), (304, 61910), (328, 57380), (380, 49528), (410, 45904), (604, 31160), (608, 30955), (656, 28690), (755, 24928), (760, 24764), (779, 24160), (820, 22952), (1208, 15580), (1312, 14345), (1510, 12464), (1520, 12382), (1558, 12080), (1640, 11476), (2416, 7790), (2869, 6560), (3020, 6232), (3040, 6191), (3116, 6040), (3280, 5738), (3895, 4832)]