20804050

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 41515200

約数和(自身を除く): 20711150

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 61, 95, 122, 190, 305, 359, 475, 610, 718, 950, 1159, 1525, 1795, 2318, 3050, 3590, 5795, 6821, 8975, 11590, 13642, 17950, 21899, 28975, 34105, 43798, 57950, 68210, 109495, 170525, 218990, 341050, 416081, 547475, 832162, 1094950, 2080405, 4160810, 10402025, 20804050]

約数ペア:

[(1, 20804050), (2, 10402025), (5, 4160810), (10, 2080405), (19, 1094950), (25, 832162), (38, 547475), (50, 416081), (61, 341050), (95, 218990), (122, 170525), (190, 109495), (305, 68210), (359, 57950), (475, 43798), (610, 34105), (718, 28975), (950, 21899), (1159, 17950), (1525, 13642), (1795, 11590), (2318, 8975), (3050, 6821), (3590, 5795)]