861059080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{20639}}^1$

素因数の和:20806

約数の個数: 64

約数和(自身を含む): 2229120000

約数和(自身を除く): 1368060920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 745, 1043, 1192, 1490, 2086, 2980, 4172, 5215, 5960, 8344, 10430, 20639, 20860, 41278, 41720, 82556, 103195, 144473, 165112, 206390, 288946, 412780, 577892, 722365, 825560, 1155784, 1444730, 2889460, 3075211, 5778920, 6150422, 12300844, 15376055, 21526477, 24601688, 30752110, 43052954, 61504220, 86105908, 107632385, 123008440, 172211816, 215264770, 430529540, 861059080]

約数ペア:

[(1, 861059080), (2, 430529540), (4, 215264770), (5, 172211816), (7, 123008440), (8, 107632385), (10, 86105908), (14, 61504220), (20, 43052954), (28, 30752110), (35, 24601688), (40, 21526477), (56, 15376055), (70, 12300844), (140, 6150422), (149, 5778920), (280, 3075211), (298, 2889460), (596, 1444730), (745, 1155784), (1043, 825560), (1192, 722365), (1490, 577892), (2086, 412780), (2980, 288946), (4172, 206390), (5215, 165112), (5960, 144473), (8344, 103195), (10430, 82556), (20639, 41720), (20860, 41278)]