20138030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 42690240

約数和(自身を除く): 22552210

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 89, 110, 121, 170, 178, 187, 242, 374, 445, 605, 890, 935, 979, 1210, 1331, 1513, 1870, 1958, 2057, 2662, 3026, 4114, 4895, 6655, 7565, 9790, 10285, 10769, 13310, 15130, 16643, 20570, 21538, 22627, 33286, 45254, 53845, 83215, 107690, 113135, 118459, 166430, 183073, 226270, 236918, 366146, 592295, 915365, 1184590, 1830730, 2013803, 4027606, 10069015, 20138030]

約数ペア:

[(1, 20138030), (2, 10069015), (5, 4027606), (10, 2013803), (11, 1830730), (17, 1184590), (22, 915365), (34, 592295), (55, 366146), (85, 236918), (89, 226270), (110, 183073), (121, 166430), (170, 118459), (178, 113135), (187, 107690), (242, 83215), (374, 53845), (445, 45254), (605, 33286), (890, 22627), (935, 21538), (979, 20570), (1210, 16643), (1331, 15130), (1513, 13310), (1870, 10769), (1958, 10285), (2057, 9790), (2662, 7565), (3026, 6655), (4114, 4895)]