258697985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{887}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 383104512

約数和(自身を除く): 124406527

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 641, 887, 3205, 4435, 4487, 6209, 8333, 11531, 22435, 31045, 41665, 57655, 58331, 80717, 291655, 403585, 568567, 2842835, 3979969, 7391371, 19899845, 36956855, 51739597, 258697985]

約数ペア:

[(1, 258697985), (5, 51739597), (7, 36956855), (13, 19899845), (35, 7391371), (65, 3979969), (91, 2842835), (455, 568567), (641, 403585), (887, 291655), (3205, 80717), (4435, 58331), (4487, 57655), (6209, 41665), (8333, 31045), (11531, 22435)]