65545840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4159}}^1$

素因数の和:4369

約数の個数: 40

約数和(自身を含む): 153204480

約数和(自身を除く): 87658640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 4159, 7880, 8318, 15760, 16636, 20795, 33272, 41590, 66544, 83180, 166360, 332720, 819323, 1638646, 3277292, 4096615, 6554584, 8193230, 13109168, 16386460, 32772920, 65545840]

約数ペア:

[(1, 65545840), (2, 32772920), (4, 16386460), (5, 13109168), (8, 8193230), (10, 6554584), (16, 4096615), (20, 3277292), (40, 1638646), (80, 819323), (197, 332720), (394, 166360), (788, 83180), (985, 66544), (1576, 41590), (1970, 33272), (3152, 20795), (3940, 16636), (4159, 15760), (7880, 8318)]