20755600

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2731}}^1$

素因数の和:2768

約数の個数: 60

約数和(自身を含む): 52509040

約数和(自身を除く): 31753440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2731, 3800, 5462, 7600, 10924, 13655, 21848, 27310, 43696, 51889, 54620, 68275, 103778, 109240, 136550, 207556, 218480, 259445, 273100, 415112, 518890, 546200, 830224, 1037780, 1092400, 1297225, 2075560, 2594450, 4151120, 5188900, 10377800, 20755600]

約数ペア:

[(1, 20755600), (2, 10377800), (4, 5188900), (5, 4151120), (8, 2594450), (10, 2075560), (16, 1297225), (19, 1092400), (20, 1037780), (25, 830224), (38, 546200), (40, 518890), (50, 415112), (76, 273100), (80, 259445), (95, 218480), (100, 207556), (152, 136550), (190, 109240), (200, 103778), (304, 68275), (380, 54620), (400, 51889), (475, 43696), (760, 27310), (950, 21848), (1520, 13655), (1900, 10924), (2731, 7600), (3800, 5462)]