17918780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1031}}^1$

素因数の和:1130

約数の個数: 48

約数和(自身を含む): 41610240

約数和(自身を除く): 23691460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1031, 1580, 1738, 2062, 3476, 4124, 4345, 5155, 8690, 10310, 11341, 17380, 20620, 22682, 45364, 56705, 81449, 113410, 162898, 226820, 325796, 407245, 814490, 895939, 1628980, 1791878, 3583756, 4479695, 8959390, 17918780]

約数ペア:

[(1, 17918780), (2, 8959390), (4, 4479695), (5, 3583756), (10, 1791878), (11, 1628980), (20, 895939), (22, 814490), (44, 407245), (55, 325796), (79, 226820), (110, 162898), (158, 113410), (220, 81449), (316, 56705), (395, 45364), (790, 22682), (869, 20620), (1031, 17380), (1580, 11341), (1738, 10310), (2062, 8690), (3476, 5155), (4124, 4345)]