16645515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 27599616

約数和(自身を除く): 10954101

約数列:

[1, 3, 5, 15, 43, 129, 131, 197, 215, 393, 591, 645, 655, 985, 1965, 2955, 5633, 8471, 16899, 25413, 25807, 28165, 42355, 77421, 84495, 127065, 129035, 387105, 1109701, 3329103, 5548505, 16645515]

約数ペア:

[(1, 16645515), (3, 5548505), (5, 3329103), (15, 1109701), (43, 387105), (129, 129035), (131, 127065), (197, 84495), (215, 77421), (393, 42355), (591, 28165), (645, 25807), (655, 25413), (985, 16899), (1965, 8471), (2955, 5633)]