21503940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1801}}^1$

素因数の和:2012

約数の個数: 48

約数和(自身を含む): 60547200

約数和(自身を除く): 39043260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1801, 1990, 2388, 2985, 3602, 3980, 5403, 5970, 7204, 9005, 10806, 11940, 18010, 21612, 27015, 36020, 54030, 108060, 358399, 716798, 1075197, 1433596, 1791995, 2150394, 3583990, 4300788, 5375985, 7167980, 10751970, 21503940]

約数ペア:

[(1, 21503940), (2, 10751970), (3, 7167980), (4, 5375985), (5, 4300788), (6, 3583990), (10, 2150394), (12, 1791995), (15, 1433596), (20, 1075197), (30, 716798), (60, 358399), (199, 108060), (398, 54030), (597, 36020), (796, 27015), (995, 21612), (1194, 18010), (1801, 11940), (1990, 10806), (2388, 9005), (2985, 7204), (3602, 5970), (3980, 5403)]