18647816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{587}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 40325040

約数和(自身を除く): 21677224

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 361, 418, 587, 722, 836, 1174, 1444, 1672, 2348, 2888, 3971, 4696, 6457, 7942, 11153, 12914, 15884, 22306, 25828, 31768, 44612, 51656, 89224, 122683, 211907, 245366, 423814, 490732, 847628, 981464, 1695256, 2330977, 4661954, 9323908, 18647816]

約数ペア:

[(1, 18647816), (2, 9323908), (4, 4661954), (8, 2330977), (11, 1695256), (19, 981464), (22, 847628), (38, 490732), (44, 423814), (76, 245366), (88, 211907), (152, 122683), (209, 89224), (361, 51656), (418, 44612), (587, 31768), (722, 25828), (836, 22306), (1174, 15884), (1444, 12914), (1672, 11153), (2348, 7942), (2888, 6457), (3971, 4696)]