18748912

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 45552640

約数和(自身を除く): 26803728

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 79, 91, 104, 112, 158, 163, 182, 208, 316, 326, 364, 553, 632, 652, 728, 1027, 1106, 1141, 1264, 1304, 1456, 2054, 2119, 2212, 2282, 2608, 4108, 4238, 4424, 4564, 7189, 8216, 8476, 8848, 9128, 12877, 14378, 14833, 16432, 16952, 18256, 25754, 28756, 29666, 33904, 51508, 57512, 59332, 90139, 103016, 115024, 118664, 167401, 180278, 206032, 237328, 334802, 360556, 669604, 721112, 1171807, 1339208, 1442224, 2343614, 2678416, 4687228, 9374456, 18748912]

約数ペア:

[(1, 18748912), (2, 9374456), (4, 4687228), (7, 2678416), (8, 2343614), (13, 1442224), (14, 1339208), (16, 1171807), (26, 721112), (28, 669604), (52, 360556), (56, 334802), (79, 237328), (91, 206032), (104, 180278), (112, 167401), (158, 118664), (163, 115024), (182, 103016), (208, 90139), (316, 59332), (326, 57512), (364, 51508), (553, 33904), (632, 29666), (652, 28756), (728, 25754), (1027, 18256), (1106, 16952), (1141, 16432), (1264, 14833), (1304, 14378), (1456, 12877), (2054, 9128), (2119, 8848), (2212, 8476), (2282, 8216), (2608, 7189), (4108, 4564), (4238, 4424)]