21491565

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1033}}^1$

素因数の和:1133

約数の個数: 32

約数和(自身を含む): 36727680

約数和(自身を除く): 15236115

約数列:

[1, 3, 5, 15, 19, 57, 73, 95, 219, 285, 365, 1033, 1095, 1387, 3099, 4161, 5165, 6935, 15495, 19627, 20805, 58881, 75409, 98135, 226227, 294405, 377045, 1131135, 1432771, 4298313, 7163855, 21491565]

約数ペア:

[(1, 21491565), (3, 7163855), (5, 4298313), (15, 1432771), (19, 1131135), (57, 377045), (73, 294405), (95, 226227), (219, 98135), (285, 75409), (365, 58881), (1033, 20805), (1095, 19627), (1387, 15495), (3099, 6935), (4161, 5165)]