20130820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 43662528

約数和(自身を除く): 23531708

約数列:

[1, 2, 4, 5, 10, 20, 67, 83, 134, 166, 181, 268, 332, 335, 362, 415, 670, 724, 830, 905, 1340, 1660, 1810, 3620, 5561, 11122, 12127, 15023, 22244, 24254, 27805, 30046, 48508, 55610, 60092, 60635, 75115, 111220, 121270, 150230, 242540, 300460, 1006541, 2013082, 4026164, 5032705, 10065410, 20130820]

約数ペア:

[(1, 20130820), (2, 10065410), (4, 5032705), (5, 4026164), (10, 2013082), (20, 1006541), (67, 300460), (83, 242540), (134, 150230), (166, 121270), (181, 111220), (268, 75115), (332, 60635), (335, 60092), (362, 55610), (415, 48508), (670, 30046), (724, 27805), (830, 24254), (905, 22244), (1340, 15023), (1660, 12127), (1810, 11122), (3620, 5561)]