18657015

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{397}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 32362176

約数和(自身を除く): 13705161

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 241, 397, 723, 1191, 1205, 1985, 3133, 3615, 5161, 5955, 9399, 15483, 15665, 25805, 46995, 77415, 95677, 287031, 478385, 1243801, 1435155, 3731403, 6219005, 18657015]

約数ペア:

[(1, 18657015), (3, 6219005), (5, 3731403), (13, 1435155), (15, 1243801), (39, 478385), (65, 287031), (195, 95677), (241, 77415), (397, 46995), (723, 25805), (1191, 15665), (1205, 15483), (1985, 9399), (3133, 5955), (3615, 5161)]