20015840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9623}}^1$

素因数の和:9651

約数の個数: 48

約数和(自身を含む): 50930208

約数和(自身を除く): 30914368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9623, 19246, 38492, 48115, 76984, 96230, 125099, 153968, 192460, 250198, 307936, 384920, 500396, 625495, 769840, 1000792, 1250990, 1539680, 2001584, 2501980, 4003168, 5003960, 10007920, 20015840]

約数ペア:

[(1, 20015840), (2, 10007920), (4, 5003960), (5, 4003168), (8, 2501980), (10, 2001584), (13, 1539680), (16, 1250990), (20, 1000792), (26, 769840), (32, 625495), (40, 500396), (52, 384920), (65, 307936), (80, 250198), (104, 192460), (130, 153968), (160, 125099), (208, 96230), (260, 76984), (416, 48115), (520, 38492), (1040, 19246), (2080, 9623)]