18081844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{503}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 19173836

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 503, 817, 836, 946, 1006, 1634, 1892, 2012, 3268, 5533, 8987, 9557, 11066, 17974, 19114, 21629, 22132, 35948, 38228, 43258, 86516, 105127, 210254, 237919, 410951, 420508, 475838, 821902, 951676, 1643804, 4520461, 9040922, 18081844]

約数ペア:

[(1, 18081844), (2, 9040922), (4, 4520461), (11, 1643804), (19, 951676), (22, 821902), (38, 475838), (43, 420508), (44, 410951), (76, 237919), (86, 210254), (172, 105127), (209, 86516), (418, 43258), (473, 38228), (503, 35948), (817, 22132), (836, 21629), (946, 19114), (1006, 17974), (1634, 11066), (1892, 9557), (2012, 8987), (3268, 5533)]