20939724

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:567

約数の個数: 72

約数和(自身を含む): 57696912

約数和(自身を除く): 36757188

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 101, 117, 156, 202, 234, 303, 404, 443, 468, 606, 886, 909, 1212, 1313, 1329, 1772, 1818, 2626, 2658, 3636, 3939, 3987, 5252, 5316, 5759, 7878, 7974, 11518, 11817, 15756, 15948, 17277, 23036, 23634, 34554, 44743, 47268, 51831, 69108, 89486, 103662, 134229, 178972, 207324, 268458, 402687, 536916, 581659, 805374, 1163318, 1610748, 1744977, 2326636, 3489954, 5234931, 6979908, 10469862, 20939724]

約数ペア:

[(1, 20939724), (2, 10469862), (3, 6979908), (4, 5234931), (6, 3489954), (9, 2326636), (12, 1744977), (13, 1610748), (18, 1163318), (26, 805374), (36, 581659), (39, 536916), (52, 402687), (78, 268458), (101, 207324), (117, 178972), (156, 134229), (202, 103662), (234, 89486), (303, 69108), (404, 51831), (443, 47268), (468, 44743), (606, 34554), (886, 23634), (909, 23036), (1212, 17277), (1313, 15948), (1329, 15756), (1772, 11817), (1818, 11518), (2626, 7974), (2658, 7878), (3636, 5759), (3939, 5316), (3987, 5252)]