21491106640

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{44543}}^1$

素因数の和:44756

約数の個数: 80

約数和(自身を含む): 51633266688

約数和(自身を除く): 30142160048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 163, 185, 296, 326, 370, 592, 652, 740, 815, 1304, 1480, 1630, 2608, 2960, 3260, 6031, 6520, 12062, 13040, 24124, 30155, 44543, 48248, 60310, 89086, 96496, 120620, 178172, 222715, 241240, 356344, 445430, 482480, 712688, 890860, 1648091, 1781720, 3296182, 3563440, 6592364, 7260509, 8240455, 13184728, 14521018, 16480910, 26369456, 29042036, 32961820, 36302545, 58084072, 65923640, 72605090, 116168144, 131847280, 145210180, 268638833, 290420360, 537277666, 580840720, 1074555332, 1343194165, 2149110664, 2686388330, 4298221328, 5372776660, 10745553320, 21491106640]

約数ペア:

[(1, 21491106640), (2, 10745553320), (4, 5372776660), (5, 4298221328), (8, 2686388330), (10, 2149110664), (16, 1343194165), (20, 1074555332), (37, 580840720), (40, 537277666), (74, 290420360), (80, 268638833), (148, 145210180), (163, 131847280), (185, 116168144), (296, 72605090), (326, 65923640), (370, 58084072), (592, 36302545), (652, 32961820), (740, 29042036), (815, 26369456), (1304, 16480910), (1480, 14521018), (1630, 13184728), (2608, 8240455), (2960, 7260509), (3260, 6592364), (6031, 3563440), (6520, 3296182), (12062, 1781720), (13040, 1648091), (24124, 890860), (30155, 712688), (44543, 482480), (48248, 445430), (60310, 356344), (89086, 241240), (96496, 222715), (120620, 178172)]