71521840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{68771}}^1$

素因数の和:68797

約数の個数: 40

約数和(自身を含む): 179082288

約数和(自身を除く): 107560448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 68771, 137542, 275084, 343855, 550168, 687710, 894023, 1100336, 1375420, 1788046, 2750840, 3576092, 4470115, 5501680, 7152184, 8940230, 14304368, 17880460, 35760920, 71521840]

約数ペア:

[(1, 71521840), (2, 35760920), (4, 17880460), (5, 14304368), (8, 8940230), (10, 7152184), (13, 5501680), (16, 4470115), (20, 3576092), (26, 2750840), (40, 1788046), (52, 1375420), (65, 1100336), (80, 894023), (104, 687710), (130, 550168), (208, 343855), (260, 275084), (520, 137542), (1040, 68771)]