21097008

素因数分解:

$2^4\times 3^2\times {\mathrm{239}}^1\times {\mathrm{613}}^1$

素因数の和:866

約数の個数: 60

約数和(自身を含む): 59386080

約数和(自身を除く): 38289072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 239, 478, 613, 717, 956, 1226, 1434, 1839, 1912, 2151, 2452, 2868, 3678, 3824, 4302, 4904, 5517, 5736, 7356, 8604, 9808, 11034, 11472, 14712, 17208, 22068, 29424, 34416, 44136, 88272, 146507, 293014, 439521, 586028, 879042, 1172056, 1318563, 1758084, 2344112, 2637126, 3516168, 5274252, 7032336, 10548504, 21097008]

約数ペア:

[(1, 21097008), (2, 10548504), (3, 7032336), (4, 5274252), (6, 3516168), (8, 2637126), (9, 2344112), (12, 1758084), (16, 1318563), (18, 1172056), (24, 879042), (36, 586028), (48, 439521), (72, 293014), (144, 146507), (239, 88272), (478, 44136), (613, 34416), (717, 29424), (956, 22068), (1226, 17208), (1434, 14712), (1839, 11472), (1912, 11034), (2151, 9808), (2452, 8604), (2868, 7356), (3678, 5736), (3824, 5517), (4302, 4904)]