21156010

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:462

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18035030

約数列:

[1, 2, 5, 10, 53, 106, 179, 223, 265, 358, 446, 530, 895, 1115, 1790, 2230, 9487, 11819, 18974, 23638, 39917, 47435, 59095, 79834, 94870, 118190, 199585, 399170, 2115601, 4231202, 10578005, 21156010]

約数ペア:

[(1, 21156010), (2, 10578005), (5, 4231202), (10, 2115601), (53, 399170), (106, 199585), (179, 118190), (223, 94870), (265, 79834), (358, 59095), (446, 47435), (530, 39917), (895, 23638), (1115, 18974), (1790, 11819), (2230, 9487)]