398331385

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 505440000

約数和(自身を除く): 107108615

約数列:

[1, 5, 29, 103, 145, 149, 179, 515, 745, 895, 2987, 4321, 5191, 14935, 15347, 18437, 21605, 25955, 26671, 76735, 92185, 133355, 445063, 534673, 773459, 2225315, 2673365, 2747113, 3867295, 13735565, 79666277, 398331385]

約数ペア:

[(1, 398331385), (5, 79666277), (29, 13735565), (103, 3867295), (145, 2747113), (149, 2673365), (179, 2225315), (515, 773459), (745, 534673), (895, 445063), (2987, 133355), (4321, 92185), (5191, 76735), (14935, 26671), (15347, 25955), (18437, 21605)]