21461840

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4547}}^1$

素因数の和:4619

約数の個数: 40

約数和(自身を含む): 50755680

約数和(自身を除く): 29293840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4547, 4720, 9094, 18188, 22735, 36376, 45470, 72752, 90940, 181880, 268273, 363760, 536546, 1073092, 1341365, 2146184, 2682730, 4292368, 5365460, 10730920, 21461840]

約数ペア:

[(1, 21461840), (2, 10730920), (4, 5365460), (5, 4292368), (8, 2682730), (10, 2146184), (16, 1341365), (20, 1073092), (40, 536546), (59, 363760), (80, 268273), (118, 181880), (236, 90940), (295, 72752), (472, 45470), (590, 36376), (944, 22735), (1180, 18188), (2360, 9094), (4547, 4720)]