21527920

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4561}}^1$

素因数の和:4633

約数の個数: 40

約数和(自身を含む): 50911920

約数和(自身を除く): 29384000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4561, 4720, 9122, 18244, 22805, 36488, 45610, 72976, 91220, 182440, 269099, 364880, 538198, 1076396, 1345495, 2152792, 2690990, 4305584, 5381980, 10763960, 21527920]

約数ペア:

[(1, 21527920), (2, 10763960), (4, 5381980), (5, 4305584), (8, 2690990), (10, 2152792), (16, 1345495), (20, 1076396), (40, 538198), (59, 364880), (80, 269099), (118, 182440), (236, 91220), (295, 72976), (472, 45610), (590, 36488), (944, 22805), (1180, 18244), (2360, 9122), (4561, 4720)]