21235812

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{691}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 53710272

約数和(自身を除く): 32474460

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 197, 394, 591, 691, 788, 1182, 1382, 2073, 2364, 2561, 2764, 4146, 5122, 7683, 8292, 8983, 10244, 15366, 17966, 26949, 30732, 35932, 53898, 107796, 136127, 272254, 408381, 544508, 816762, 1633524, 1769651, 3539302, 5308953, 7078604, 10617906, 21235812]

約数ペア:

[(1, 21235812), (2, 10617906), (3, 7078604), (4, 5308953), (6, 3539302), (12, 1769651), (13, 1633524), (26, 816762), (39, 544508), (52, 408381), (78, 272254), (156, 136127), (197, 107796), (394, 53898), (591, 35932), (691, 30732), (788, 26949), (1182, 17966), (1382, 15366), (2073, 10244), (2364, 8983), (2561, 8292), (2764, 7683), (4146, 5122)]