21200504

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10729}}^1$

素因数の和:10767

約数の個数: 32

約数和(自身を含む): 45066000

約数和(自身を除く): 23865496

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10729, 21458, 42916, 85832, 139477, 203851, 278954, 407702, 557908, 815404, 1115816, 1630808, 2650063, 5300126, 10600252, 21200504]

約数ペア:

[(1, 21200504), (2, 10600252), (4, 5300126), (8, 2650063), (13, 1630808), (19, 1115816), (26, 815404), (38, 557908), (52, 407702), (76, 278954), (104, 203851), (152, 139477), (247, 85832), (494, 42916), (988, 21458), (1976, 10729)]