20451888

素因数分解:

$2^4\times 3^2\times {\mathrm{109}}^1\times {\mathrm{1303}}^1$

素因数の和:1426

約数の個数: 60

約数和(自身を含む): 57806320

約数和(自身を除く): 37354432

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 109, 144, 218, 327, 436, 654, 872, 981, 1303, 1308, 1744, 1962, 2606, 2616, 3909, 3924, 5212, 5232, 7818, 7848, 10424, 11727, 15636, 15696, 20848, 23454, 31272, 46908, 62544, 93816, 142027, 187632, 284054, 426081, 568108, 852162, 1136216, 1278243, 1704324, 2272432, 2556486, 3408648, 5112972, 6817296, 10225944, 20451888]

約数ペア:

[(1, 20451888), (2, 10225944), (3, 6817296), (4, 5112972), (6, 3408648), (8, 2556486), (9, 2272432), (12, 1704324), (16, 1278243), (18, 1136216), (24, 852162), (36, 568108), (48, 426081), (72, 284054), (109, 187632), (144, 142027), (218, 93816), (327, 62544), (436, 46908), (654, 31272), (872, 23454), (981, 20848), (1303, 15696), (1308, 15636), (1744, 11727), (1962, 10424), (2606, 7848), (2616, 7818), (3909, 5232), (3924, 5212)]