31321240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{21163}}^1$

素因数の和:21211

約数の個数: 32

約数和(自身を含む): 72380880

約数和(自身を除く): 41059640

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 21163, 42326, 84652, 105815, 169304, 211630, 423260, 783031, 846520, 1566062, 3132124, 3915155, 6264248, 7830310, 15660620, 31321240]

約数ペア:

[(1, 31321240), (2, 15660620), (4, 7830310), (5, 6264248), (8, 3915155), (10, 3132124), (20, 1566062), (37, 846520), (40, 783031), (74, 423260), (148, 211630), (185, 169304), (296, 105815), (370, 84652), (740, 42326), (1480, 21163)]