21015240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2399}}^1$

素因数の和:2486

約数の個数: 64

約数和(自身を含む): 63936000

約数和(自身を除く): 42920760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 73, 120, 146, 219, 292, 365, 438, 584, 730, 876, 1095, 1460, 1752, 2190, 2399, 2920, 4380, 4798, 7197, 8760, 9596, 11995, 14394, 19192, 23990, 28788, 35985, 47980, 57576, 71970, 95960, 143940, 175127, 287880, 350254, 525381, 700508, 875635, 1050762, 1401016, 1751270, 2101524, 2626905, 3502540, 4203048, 5253810, 7005080, 10507620, 21015240]

約数ペア:

[(1, 21015240), (2, 10507620), (3, 7005080), (4, 5253810), (5, 4203048), (6, 3502540), (8, 2626905), (10, 2101524), (12, 1751270), (15, 1401016), (20, 1050762), (24, 875635), (30, 700508), (40, 525381), (60, 350254), (73, 287880), (120, 175127), (146, 143940), (219, 95960), (292, 71970), (365, 57576), (438, 47980), (584, 35985), (730, 28788), (876, 23990), (1095, 19192), (1460, 14394), (1752, 11995), (2190, 9596), (2399, 8760), (2920, 7197), (4380, 4798)]