9923980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 23063040

約数和(自身を除く): 13139060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 571, 790, 869, 1142, 1580, 1738, 2284, 2855, 3476, 4345, 5710, 6281, 8690, 11420, 12562, 17380, 25124, 31405, 45109, 62810, 90218, 125620, 180436, 225545, 451090, 496199, 902180, 992398, 1984796, 2480995, 4961990, 9923980]

約数ペア:

[(1, 9923980), (2, 4961990), (4, 2480995), (5, 1984796), (10, 992398), (11, 902180), (20, 496199), (22, 451090), (44, 225545), (55, 180436), (79, 125620), (110, 90218), (158, 62810), (220, 45109), (316, 31405), (395, 25124), (571, 17380), (790, 12562), (869, 11420), (1142, 8690), (1580, 6281), (1738, 5710), (2284, 4345), (2855, 3476)]