16581591

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 27824160

約数和(自身を除く): 11242569

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 181, 243, 261, 351, 377, 543, 783, 1053, 1131, 1629, 2349, 2353, 3159, 3393, 4887, 5249, 7047, 7059, 10179, 14661, 15747, 21177, 30537, 43983, 47241, 63531, 68237, 91611, 141723, 190593, 204711, 425169, 571779, 614133, 1275507, 1842399, 5527197, 16581591]

約数ペア:

[(1, 16581591), (3, 5527197), (9, 1842399), (13, 1275507), (27, 614133), (29, 571779), (39, 425169), (81, 204711), (87, 190593), (117, 141723), (181, 91611), (243, 68237), (261, 63531), (351, 47241), (377, 43983), (543, 30537), (783, 21177), (1053, 15747), (1131, 14661), (1629, 10179), (2349, 7059), (2353, 7047), (3159, 5249), (3393, 4887)]