21204620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1487}}^1$

素因数の和:1550

約数の個数: 48

約数和(自身を含む): 47996928

約数和(自身を除く): 26792308

約数列:

[1, 2, 4, 5, 10, 20, 23, 31, 46, 62, 92, 115, 124, 155, 230, 310, 460, 620, 713, 1426, 1487, 2852, 2974, 3565, 5948, 7130, 7435, 14260, 14870, 29740, 34201, 46097, 68402, 92194, 136804, 171005, 184388, 230485, 342010, 460970, 684020, 921940, 1060231, 2120462, 4240924, 5301155, 10602310, 21204620]

約数ペア:

[(1, 21204620), (2, 10602310), (4, 5301155), (5, 4240924), (10, 2120462), (20, 1060231), (23, 921940), (31, 684020), (46, 460970), (62, 342010), (92, 230485), (115, 184388), (124, 171005), (155, 136804), (230, 92194), (310, 68402), (460, 46097), (620, 34201), (713, 29740), (1426, 14870), (1487, 14260), (2852, 7435), (2974, 7130), (3565, 5948)]