128455580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 314496000

約数和(自身を除く): 186040420

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 79, 95, 110, 158, 190, 209, 220, 316, 380, 389, 395, 418, 778, 790, 836, 869, 1045, 1501, 1556, 1580, 1738, 1945, 2090, 3002, 3476, 3890, 4180, 4279, 4345, 6004, 7391, 7505, 7780, 8558, 8690, 14782, 15010, 16511, 17116, 17380, 21395, 29564, 30020, 30731, 33022, 36955, 42790, 61462, 66044, 73910, 81301, 82555, 85580, 122924, 147820, 153655, 162602, 165110, 307310, 325204, 330220, 338041, 406505, 583889, 614620, 676082, 813010, 1167778, 1352164, 1626020, 1690205, 2335556, 2919445, 3380410, 5838890, 6422779, 6760820, 11677780, 12845558, 25691116, 32113895, 64227790, 128455580]

約数ペア:

[(1, 128455580), (2, 64227790), (4, 32113895), (5, 25691116), (10, 12845558), (11, 11677780), (19, 6760820), (20, 6422779), (22, 5838890), (38, 3380410), (44, 2919445), (55, 2335556), (76, 1690205), (79, 1626020), (95, 1352164), (110, 1167778), (158, 813010), (190, 676082), (209, 614620), (220, 583889), (316, 406505), (380, 338041), (389, 330220), (395, 325204), (418, 307310), (778, 165110), (790, 162602), (836, 153655), (869, 147820), (1045, 122924), (1501, 85580), (1556, 82555), (1580, 81301), (1738, 73910), (1945, 66044), (2090, 61462), (3002, 42790), (3476, 36955), (3890, 33022), (4180, 30731), (4279, 30020), (4345, 29564), (6004, 21395), (7391, 17380), (7505, 17116), (7780, 16511), (8558, 15010), (8690, 14782)]