81451600

素因数分解:

$2^4\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1297}}^1$

素因数の和:1472

約数の個数: 60

約数和(自身を含む): 197085724

約数和(自身を除く): 115634124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 157, 200, 314, 400, 628, 785, 1256, 1297, 1570, 2512, 2594, 3140, 3925, 5188, 6280, 6485, 7850, 10376, 12560, 12970, 15700, 20752, 25940, 31400, 32425, 51880, 62800, 64850, 103760, 129700, 203629, 259400, 407258, 518800, 814516, 1018145, 1629032, 2036290, 3258064, 4072580, 5090725, 8145160, 10181450, 16290320, 20362900, 40725800, 81451600]

約数ペア:

[(1, 81451600), (2, 40725800), (4, 20362900), (5, 16290320), (8, 10181450), (10, 8145160), (16, 5090725), (20, 4072580), (25, 3258064), (40, 2036290), (50, 1629032), (80, 1018145), (100, 814516), (157, 518800), (200, 407258), (314, 259400), (400, 203629), (628, 129700), (785, 103760), (1256, 64850), (1297, 62800), (1570, 51880), (2512, 32425), (2594, 31400), (3140, 25940), (3925, 20752), (5188, 15700), (6280, 12970), (6485, 12560), (7850, 10376)]