21965368

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 46425600

約数和(自身を除く): 24460232

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 61, 76, 92, 103, 122, 152, 184, 206, 244, 412, 437, 488, 824, 874, 1159, 1403, 1748, 1957, 2318, 2369, 2806, 3496, 3914, 4636, 4738, 5612, 6283, 7828, 9272, 9476, 11224, 12566, 15656, 18952, 25132, 26657, 45011, 50264, 53314, 90022, 106628, 119377, 144509, 180044, 213256, 238754, 289018, 360088, 477508, 578036, 955016, 1156072, 2745671, 5491342, 10982684, 21965368]

約数ペア:

[(1, 21965368), (2, 10982684), (4, 5491342), (8, 2745671), (19, 1156072), (23, 955016), (38, 578036), (46, 477508), (61, 360088), (76, 289018), (92, 238754), (103, 213256), (122, 180044), (152, 144509), (184, 119377), (206, 106628), (244, 90022), (412, 53314), (437, 50264), (488, 45011), (824, 26657), (874, 25132), (1159, 18952), (1403, 15656), (1748, 12566), (1957, 11224), (2318, 9476), (2369, 9272), (2806, 7828), (3496, 6283), (3914, 5612), (4636, 4738)]