21873910

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1800

約数の個数: 32

約数和(自身を含む): 41658624

約数和(自身を除く): 19784714

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 1721, 2542, 3442, 6355, 8605, 12710, 17210, 53351, 70561, 106702, 141122, 266755, 352805, 533510, 705610, 2187391, 4374782, 10936955, 21873910]

約数ペア:

[(1, 21873910), (2, 10936955), (5, 4374782), (10, 2187391), (31, 705610), (41, 533510), (62, 352805), (82, 266755), (155, 141122), (205, 106702), (310, 70561), (410, 53351), (1271, 17210), (1721, 12710), (2542, 8605), (3442, 6355)]