31320783

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 55036800

約数和(自身を除く): 23716017

約数列:

[1, 3, 9, 13, 17, 27, 29, 39, 51, 87, 117, 153, 181, 221, 261, 351, 377, 459, 493, 543, 663, 783, 1131, 1479, 1629, 1989, 2353, 3077, 3393, 4437, 4887, 5249, 5967, 6409, 7059, 9231, 10179, 13311, 15747, 19227, 21177, 27693, 40001, 47241, 57681, 63531, 68237, 83079, 89233, 120003, 141723, 173043, 204711, 267699, 360009, 614133, 803097, 1080027, 1160029, 1842399, 2409291, 3480087, 10440261, 31320783]

約数ペア:

[(1, 31320783), (3, 10440261), (9, 3480087), (13, 2409291), (17, 1842399), (27, 1160029), (29, 1080027), (39, 803097), (51, 614133), (87, 360009), (117, 267699), (153, 204711), (181, 173043), (221, 141723), (261, 120003), (351, 89233), (377, 83079), (459, 68237), (493, 63531), (543, 57681), (663, 47241), (783, 40001), (1131, 27693), (1479, 21177), (1629, 19227), (1989, 15747), (2353, 13311), (3077, 10179), (3393, 9231), (4437, 7059), (4887, 6409), (5249, 5967)]