21390372

素因数分解:

$2^2\times 3^3\times {\mathrm{31}}^1\times {\mathrm{6389}}^1$

素因数の和:6433

約数の個数: 48

約数和(自身を含む): 57254400

約数和(自身を除く): 35864028

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 31, 36, 54, 62, 93, 108, 124, 186, 279, 372, 558, 837, 1116, 1674, 3348, 6389, 12778, 19167, 25556, 38334, 57501, 76668, 115002, 172503, 198059, 230004, 345006, 396118, 594177, 690012, 792236, 1188354, 1782531, 2376708, 3565062, 5347593, 7130124, 10695186, 21390372]

約数ペア:

[(1, 21390372), (2, 10695186), (3, 7130124), (4, 5347593), (6, 3565062), (9, 2376708), (12, 1782531), (18, 1188354), (27, 792236), (31, 690012), (36, 594177), (54, 396118), (62, 345006), (93, 230004), (108, 198059), (124, 172503), (186, 115002), (279, 76668), (372, 57501), (558, 38334), (837, 25556), (1116, 19167), (1674, 12778), (3348, 6389)]