18966928

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{997}}^1$

素因数の和:1075

約数の個数: 40

約数和(自身を含む): 38981880

約数和(自身を除く): 20014952

約数列:

[1, 2, 4, 8, 16, 29, 41, 58, 82, 116, 164, 232, 328, 464, 656, 997, 1189, 1994, 2378, 3988, 4756, 7976, 9512, 15952, 19024, 28913, 40877, 57826, 81754, 115652, 163508, 231304, 327016, 462608, 654032, 1185433, 2370866, 4741732, 9483464, 18966928]

約数ペア:

[(1, 18966928), (2, 9483464), (4, 4741732), (8, 2370866), (16, 1185433), (29, 654032), (41, 462608), (58, 327016), (82, 231304), (116, 163508), (164, 115652), (232, 81754), (328, 57826), (464, 40877), (656, 28913), (997, 19024), (1189, 15952), (1994, 9512), (2378, 7976), (3988, 4756)]