19156840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11681}}^1$

素因数の和:11733

約数の個数: 32

約数和(自身を含む): 44157960

約数和(自身を除く): 25001120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11681, 23362, 46724, 58405, 93448, 116810, 233620, 467240, 478921, 957842, 1915684, 2394605, 3831368, 4789210, 9578420, 19156840]

約数ペア:

[(1, 19156840), (2, 9578420), (4, 4789210), (5, 3831368), (8, 2394605), (10, 1915684), (20, 957842), (40, 478921), (41, 467240), (82, 233620), (164, 116810), (205, 93448), (328, 58405), (410, 46724), (820, 23362), (1640, 11681)]