20281171540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{95369}}^1$

素因数の和:95430

約数の個数: 96

約数和(自身を含む): 51270912000

約数和(自身を除く): 30989740460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 343, 434, 490, 620, 686, 868, 980, 1085, 1372, 1519, 1715, 2170, 3038, 3430, 4340, 6076, 6860, 7595, 10633, 15190, 21266, 30380, 42532, 53165, 95369, 106330, 190738, 212660, 381476, 476845, 667583, 953690, 1335166, 1907380, 2670332, 2956439, 3337915, 4673081, 5912878, 6675830, 9346162, 11825756, 13351660, 14782195, 18692324, 20695073, 23365405, 29564390, 32711567, 41390146, 46730810, 59128780, 65423134, 82780292, 93461620, 103475365, 130846268, 144865511, 163557835, 206950730, 289731022, 327115670, 413901460, 579462044, 654231340, 724327555, 1014058577, 1448655110, 2028117154, 2897310220, 4056234308, 5070292885, 10140585770, 20281171540]

約数ペア:

[(1, 20281171540), (2, 10140585770), (4, 5070292885), (5, 4056234308), (7, 2897310220), (10, 2028117154), (14, 1448655110), (20, 1014058577), (28, 724327555), (31, 654231340), (35, 579462044), (49, 413901460), (62, 327115670), (70, 289731022), (98, 206950730), (124, 163557835), (140, 144865511), (155, 130846268), (196, 103475365), (217, 93461620), (245, 82780292), (310, 65423134), (343, 59128780), (434, 46730810), (490, 41390146), (620, 32711567), (686, 29564390), (868, 23365405), (980, 20695073), (1085, 18692324), (1372, 14782195), (1519, 13351660), (1715, 11825756), (2170, 9346162), (3038, 6675830), (3430, 5912878), (4340, 4673081), (6076, 3337915), (6860, 2956439), (7595, 2670332), (10633, 1907380), (15190, 1335166), (21266, 953690), (30380, 667583), (42532, 476845), (53165, 381476), (95369, 212660), (106330, 190738)]