18984515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 26922240

約数和(自身を除く): 7937725

約数列:

[1, 5, 11, 19, 37, 55, 95, 185, 209, 407, 491, 703, 1045, 2035, 2455, 3515, 5401, 7733, 9329, 18167, 27005, 38665, 46645, 90835, 102619, 199837, 345173, 513095, 999185, 1725865, 3796903, 18984515]

約数ペア:

[(1, 18984515), (5, 3796903), (11, 1725865), (19, 999185), (37, 513095), (55, 345173), (95, 199837), (185, 102619), (209, 90835), (407, 46645), (491, 38665), (703, 27005), (1045, 18167), (2035, 9329), (2455, 7733), (3515, 5401)]