21415515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{1213}}^1$

素因数の和:1339

約数の個数: 32

約数和(自身を含む): 37760256

約数和(自身を除く): 16344741

約数列:

[1, 3, 5, 11, 15, 33, 55, 107, 165, 321, 535, 1177, 1213, 1605, 3531, 3639, 5885, 6065, 13343, 17655, 18195, 40029, 66715, 129791, 200145, 389373, 648955, 1427701, 1946865, 4283103, 7138505, 21415515]

約数ペア:

[(1, 21415515), (3, 7138505), (5, 4283103), (11, 1946865), (15, 1427701), (33, 648955), (55, 389373), (107, 200145), (165, 129791), (321, 66715), (535, 40029), (1177, 18195), (1213, 17655), (1605, 13343), (3531, 6065), (3639, 5885)]