20921862

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:517

約数の個数: 48

約数和(自身を含む): 46379520

約数和(自身を除く): 25457658

約数列:

[1, 2, 3, 6, 13, 26, 39, 47, 78, 94, 141, 169, 282, 338, 439, 507, 611, 878, 1014, 1222, 1317, 1833, 2634, 3666, 5707, 7943, 11414, 15886, 17121, 20633, 23829, 34242, 41266, 47658, 61899, 74191, 123798, 148382, 222573, 268229, 445146, 536458, 804687, 1609374, 3486977, 6973954, 10460931, 20921862]

約数ペア:

[(1, 20921862), (2, 10460931), (3, 6973954), (6, 3486977), (13, 1609374), (26, 804687), (39, 536458), (47, 445146), (78, 268229), (94, 222573), (141, 148382), (169, 123798), (282, 74191), (338, 61899), (439, 47658), (507, 41266), (611, 34242), (878, 23829), (1014, 20633), (1222, 17121), (1317, 15886), (1833, 11414), (2634, 7943), (3666, 5707)]