209397580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{2927}}^1$

素因数の和:3023

約数の個数: 72

約数和(自身を含む): 518712768

約数和(自身を除く): 309315188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 140, 146, 196, 245, 292, 365, 490, 511, 730, 980, 1022, 1460, 2044, 2555, 2927, 3577, 5110, 5854, 7154, 10220, 11708, 14308, 14635, 17885, 20489, 29270, 35770, 40978, 58540, 71540, 81956, 102445, 143423, 204890, 213671, 286846, 409780, 427342, 573692, 717115, 854684, 1068355, 1434230, 1495697, 2136710, 2868460, 2991394, 4273420, 5982788, 7478485, 10469879, 14956970, 20939758, 29913940, 41879516, 52349395, 104698790, 209397580]

約数ペア:

[(1, 209397580), (2, 104698790), (4, 52349395), (5, 41879516), (7, 29913940), (10, 20939758), (14, 14956970), (20, 10469879), (28, 7478485), (35, 5982788), (49, 4273420), (70, 2991394), (73, 2868460), (98, 2136710), (140, 1495697), (146, 1434230), (196, 1068355), (245, 854684), (292, 717115), (365, 573692), (490, 427342), (511, 409780), (730, 286846), (980, 213671), (1022, 204890), (1460, 143423), (2044, 102445), (2555, 81956), (2927, 71540), (3577, 58540), (5110, 40978), (5854, 35770), (7154, 29270), (10220, 20489), (11708, 17885), (14308, 14635)]