201521840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193771}}^1$

素因数の和:193797

約数の個数: 40

約数和(自身を含む): 504582288

約数和(自身を除く): 303060448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 193771, 387542, 775084, 968855, 1550168, 1937710, 2519023, 3100336, 3875420, 5038046, 7750840, 10076092, 12595115, 15501680, 20152184, 25190230, 40304368, 50380460, 100760920, 201521840]

約数ペア:

[(1, 201521840), (2, 100760920), (4, 50380460), (5, 40304368), (8, 25190230), (10, 20152184), (13, 15501680), (16, 12595115), (20, 10076092), (26, 7750840), (40, 5038046), (52, 3875420), (65, 3100336), (80, 2519023), (104, 1937710), (130, 1550168), (208, 968855), (260, 775084), (520, 387542), (1040, 193771)]