20986070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 26015530

約数列:

[1, 2, 5, 7, 10, 14, 19, 31, 35, 38, 62, 70, 95, 133, 155, 190, 217, 266, 310, 434, 509, 589, 665, 1018, 1085, 1178, 1330, 2170, 2545, 2945, 3563, 4123, 5090, 5890, 7126, 8246, 9671, 15779, 17815, 19342, 20615, 31558, 35630, 41230, 48355, 67697, 78895, 96710, 110453, 135394, 157790, 220906, 299801, 338485, 552265, 599602, 676970, 1104530, 1499005, 2098607, 2998010, 4197214, 10493035, 20986070]

約数ペア:

[(1, 20986070), (2, 10493035), (5, 4197214), (7, 2998010), (10, 2098607), (14, 1499005), (19, 1104530), (31, 676970), (35, 599602), (38, 552265), (62, 338485), (70, 299801), (95, 220906), (133, 157790), (155, 135394), (190, 110453), (217, 96710), (266, 78895), (310, 67697), (434, 48355), (509, 41230), (589, 35630), (665, 31558), (1018, 20615), (1085, 19342), (1178, 17815), (1330, 15779), (2170, 9671), (2545, 8246), (2945, 7126), (3563, 5890), (4123, 5090)]