28271260

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 61236000

約数和(自身を除く): 32964740

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 149, 179, 212, 265, 298, 358, 530, 596, 716, 745, 895, 1060, 1490, 1790, 2980, 3580, 7897, 9487, 15794, 18974, 26671, 31588, 37948, 39485, 47435, 53342, 78970, 94870, 106684, 133355, 157940, 189740, 266710, 533420, 1413563, 2827126, 5654252, 7067815, 14135630, 28271260]

約数ペア:

[(1, 28271260), (2, 14135630), (4, 7067815), (5, 5654252), (10, 2827126), (20, 1413563), (53, 533420), (106, 266710), (149, 189740), (179, 157940), (212, 133355), (265, 106684), (298, 94870), (358, 78970), (530, 53342), (596, 47435), (716, 39485), (745, 37948), (895, 31588), (1060, 26671), (1490, 18974), (1790, 15794), (2980, 9487), (3580, 7897)]