19965072

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:640

約数の個数: 80

約数和(自身を含む): 55978560

約数和(自身を除く): 36013488

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 43, 48, 51, 68, 86, 102, 129, 136, 172, 204, 258, 272, 344, 408, 516, 569, 688, 731, 816, 1032, 1138, 1462, 1707, 2064, 2193, 2276, 2924, 3414, 4386, 4552, 5848, 6828, 8772, 9104, 9673, 11696, 13656, 17544, 19346, 24467, 27312, 29019, 35088, 38692, 48934, 58038, 73401, 77384, 97868, 116076, 146802, 154768, 195736, 232152, 293604, 391472, 415939, 464304, 587208, 831878, 1174416, 1247817, 1663756, 2495634, 3327512, 4991268, 6655024, 9982536, 19965072]

約数ペア:

[(1, 19965072), (2, 9982536), (3, 6655024), (4, 4991268), (6, 3327512), (8, 2495634), (12, 1663756), (16, 1247817), (17, 1174416), (24, 831878), (34, 587208), (43, 464304), (48, 415939), (51, 391472), (68, 293604), (86, 232152), (102, 195736), (129, 154768), (136, 146802), (172, 116076), (204, 97868), (258, 77384), (272, 73401), (344, 58038), (408, 48934), (516, 38692), (569, 35088), (688, 29019), (731, 27312), (816, 24467), (1032, 19346), (1138, 17544), (1462, 13656), (1707, 11696), (2064, 9673), (2193, 9104), (2276, 8772), (2924, 6828), (3414, 5848), (4386, 4552)]