19813420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{797}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 45849888

約数和(自身を除く): 26036468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 797, 1130, 1243, 1594, 2260, 2486, 3188, 3985, 4972, 6215, 7970, 8767, 12430, 15940, 17534, 24860, 35068, 43835, 87670, 90061, 175340, 180122, 360244, 450305, 900610, 990671, 1801220, 1981342, 3962684, 4953355, 9906710, 19813420]

約数ペア:

[(1, 19813420), (2, 9906710), (4, 4953355), (5, 3962684), (10, 1981342), (11, 1801220), (20, 990671), (22, 900610), (44, 450305), (55, 360244), (110, 180122), (113, 175340), (220, 90061), (226, 87670), (452, 43835), (565, 35068), (797, 24860), (1130, 17534), (1243, 15940), (1594, 12430), (2260, 8767), (2486, 7970), (3188, 6215), (3985, 4972)]