20450650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1$

素因数の和:164

約数の個数: 72

約数和(自身を含む): 44220384

約数和(自身を除く): 23769734

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 103, 110, 190, 206, 209, 275, 361, 418, 475, 515, 550, 722, 950, 1030, 1045, 1133, 1805, 1957, 2090, 2266, 2575, 3610, 3914, 3971, 5150, 5225, 5665, 7942, 9025, 9785, 10450, 11330, 18050, 19570, 19855, 21527, 28325, 37183, 39710, 43054, 48925, 56650, 74366, 97850, 99275, 107635, 185915, 198550, 215270, 371830, 409013, 538175, 818026, 929575, 1076350, 1859150, 2045065, 4090130, 10225325, 20450650]

約数ペア:

[(1, 20450650), (2, 10225325), (5, 4090130), (10, 2045065), (11, 1859150), (19, 1076350), (22, 929575), (25, 818026), (38, 538175), (50, 409013), (55, 371830), (95, 215270), (103, 198550), (110, 185915), (190, 107635), (206, 99275), (209, 97850), (275, 74366), (361, 56650), (418, 48925), (475, 43054), (515, 39710), (550, 37183), (722, 28325), (950, 21527), (1030, 19855), (1045, 19570), (1133, 18050), (1805, 11330), (1957, 10450), (2090, 9785), (2266, 9025), (2575, 7942), (3610, 5665), (3914, 5225), (3971, 5150)]