81015615

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{25357}}^1$

素因数の和:25439

約数の個数: 24

約数和(自身を含む): 142410528

約数和(自身を除く): 61394913

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 25357, 76071, 126785, 228213, 380355, 1141065, 1800347, 5401041, 9001735, 16203123, 27005205, 81015615]

約数ペア:

[(1, 81015615), (3, 27005205), (5, 16203123), (9, 9001735), (15, 5401041), (45, 1800347), (71, 1141065), (213, 380355), (355, 228213), (639, 126785), (1065, 76071), (3195, 25357)]