20098390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 41932800

約数和(自身を除く): 21834410

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 79, 95, 103, 130, 158, 190, 206, 247, 395, 494, 515, 790, 1027, 1030, 1235, 1339, 1501, 1957, 2054, 2470, 2678, 3002, 3914, 5135, 6695, 7505, 8137, 9785, 10270, 13390, 15010, 16274, 19513, 19570, 25441, 39026, 40685, 50882, 81370, 97565, 105781, 127205, 154603, 195130, 211562, 254410, 309206, 528905, 773015, 1057810, 1546030, 2009839, 4019678, 10049195, 20098390]

約数ペア:

[(1, 20098390), (2, 10049195), (5, 4019678), (10, 2009839), (13, 1546030), (19, 1057810), (26, 773015), (38, 528905), (65, 309206), (79, 254410), (95, 211562), (103, 195130), (130, 154603), (158, 127205), (190, 105781), (206, 97565), (247, 81370), (395, 50882), (494, 40685), (515, 39026), (790, 25441), (1027, 19570), (1030, 19513), (1235, 16274), (1339, 15010), (1501, 13390), (1957, 10270), (2054, 9785), (2470, 8137), (2678, 7505), (3002, 6695), (3914, 5135)]