51779240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21221}}^1$

素因数の和:21293

約数の個数: 32

約数和(自身を含む): 118418760

約数和(自身を除く): 66639520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21221, 42442, 84884, 106105, 169768, 212210, 424420, 848840, 1294481, 2588962, 5177924, 6472405, 10355848, 12944810, 25889620, 51779240]

約数ペア:

[(1, 51779240), (2, 25889620), (4, 12944810), (5, 10355848), (8, 6472405), (10, 5177924), (20, 2588962), (40, 1294481), (61, 848840), (122, 424420), (244, 212210), (305, 169768), (488, 106105), (610, 84884), (1220, 42442), (2440, 21221)]