20715472

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:931

約数の個数: 40

約数和(自身を含む): 42809760

約数和(自身を除く): 22094288

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 821, 1328, 1577, 1642, 3154, 3284, 6308, 6568, 12616, 13136, 15599, 25232, 31198, 62396, 68143, 124792, 136286, 249584, 272572, 545144, 1090288, 1294717, 2589434, 5178868, 10357736, 20715472]

約数ペア:

[(1, 20715472), (2, 10357736), (4, 5178868), (8, 2589434), (16, 1294717), (19, 1090288), (38, 545144), (76, 272572), (83, 249584), (152, 136286), (166, 124792), (304, 68143), (332, 62396), (664, 31198), (821, 25232), (1328, 15599), (1577, 13136), (1642, 12616), (3154, 6568), (3284, 6308)]