20121856293

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{389}}^1\times {\mathrm{20357}}^1$

素因数の和:20778

約数の個数: 48

約数和(自身を含む): 33791022720

約数和(自身を除く): 13669166427

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 389, 847, 1167, 2541, 2723, 4279, 8169, 12837, 20357, 29953, 47069, 61071, 89859, 141207, 142499, 223927, 329483, 427497, 671781, 988449, 1567489, 2463197, 4702467, 7389591, 7918873, 17242379, 23756619, 51727137, 55432111, 87107603, 166296333, 261322809, 609753221, 958183633, 1829259663, 2874550899, 6707285431, 20121856293]

約数ペア:

[(1, 20121856293), (3, 6707285431), (7, 2874550899), (11, 1829259663), (21, 958183633), (33, 609753221), (77, 261322809), (121, 166296333), (231, 87107603), (363, 55432111), (389, 51727137), (847, 23756619), (1167, 17242379), (2541, 7918873), (2723, 7389591), (4279, 4702467), (8169, 2463197), (12837, 1567489), (20357, 988449), (29953, 671781), (47069, 427497), (61071, 329483), (89859, 223927), (141207, 142499)]