20188575

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2719}}^1$

素因数の和:2749

約数の個数: 48

約数和(自身を含む): 40473600

約数和(自身を除く): 20285025

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2719, 7425, 8157, 13595, 24471, 29909, 40785, 67975, 73413, 89727, 122355, 149545, 203925, 269181, 367065, 448635, 611775, 747725, 807543, 1345905, 1835325, 2243175, 4037715, 6729525, 20188575]

約数ペア:

[(1, 20188575), (3, 6729525), (5, 4037715), (9, 2243175), (11, 1835325), (15, 1345905), (25, 807543), (27, 747725), (33, 611775), (45, 448635), (55, 367065), (75, 269181), (99, 203925), (135, 149545), (165, 122355), (225, 89727), (275, 73413), (297, 67975), (495, 40785), (675, 29909), (825, 24471), (1485, 13595), (2475, 8157), (2719, 7425)]