19850265

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2131}}^1$

素因数の和:2171

約数の個数: 40

約数和(自身を含む): 37147968

約数和(自身を除く): 17297703

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2131, 3105, 6393, 9315, 10655, 19179, 31965, 49013, 57537, 95895, 147039, 172611, 245065, 287685, 441117, 735195, 863055, 1323351, 2205585, 3970053, 6616755, 19850265]

約数ペア:

[(1, 19850265), (3, 6616755), (5, 3970053), (9, 2205585), (15, 1323351), (23, 863055), (27, 735195), (45, 441117), (69, 287685), (81, 245065), (115, 172611), (135, 147039), (207, 95895), (345, 57537), (405, 49013), (621, 31965), (1035, 19179), (1863, 10655), (2131, 9315), (3105, 6393)]