21293256

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 55756800

約数和(自身を除く): 34463544

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 47, 86, 94, 129, 141, 172, 188, 258, 282, 344, 376, 439, 516, 564, 878, 1032, 1128, 1317, 1756, 2021, 2634, 3512, 4042, 5268, 6063, 8084, 10536, 12126, 16168, 18877, 20633, 24252, 37754, 41266, 48504, 56631, 61899, 75508, 82532, 113262, 123798, 151016, 165064, 226524, 247596, 453048, 495192, 887219, 1774438, 2661657, 3548876, 5323314, 7097752, 10646628, 21293256]

約数ペア:

[(1, 21293256), (2, 10646628), (3, 7097752), (4, 5323314), (6, 3548876), (8, 2661657), (12, 1774438), (24, 887219), (43, 495192), (47, 453048), (86, 247596), (94, 226524), (129, 165064), (141, 151016), (172, 123798), (188, 113262), (258, 82532), (282, 75508), (344, 61899), (376, 56631), (439, 48504), (516, 41266), (564, 37754), (878, 24252), (1032, 20633), (1128, 18877), (1317, 16168), (1756, 12126), (2021, 10536), (2634, 8084), (3512, 6063), (4042, 5268)]