21138110

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{241}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 44692560

約数和(自身を除く): 23554450

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 179, 241, 245, 358, 482, 490, 895, 1205, 1253, 1687, 1790, 2410, 2506, 3374, 6265, 8435, 8771, 11809, 12530, 16870, 17542, 23618, 43139, 43855, 59045, 86278, 87710, 118090, 215695, 301973, 431390, 603946, 1509865, 2113811, 3019730, 4227622, 10569055, 21138110]

約数ペア:

[(1, 21138110), (2, 10569055), (5, 4227622), (7, 3019730), (10, 2113811), (14, 1509865), (35, 603946), (49, 431390), (70, 301973), (98, 215695), (179, 118090), (241, 87710), (245, 86278), (358, 59045), (482, 43855), (490, 43139), (895, 23618), (1205, 17542), (1253, 16870), (1687, 12530), (1790, 11809), (2410, 8771), (2506, 8435), (3374, 6265)]