20152015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 27449856

約数和(自身を除く): 7297841

約数列:

[1, 5, 13, 31, 65, 73, 137, 155, 365, 403, 685, 949, 1781, 2015, 2263, 4247, 4745, 8905, 10001, 11315, 21235, 29419, 50005, 55211, 130013, 147095, 276055, 310031, 650065, 1550155, 4030403, 20152015]

約数ペア:

[(1, 20152015), (5, 4030403), (13, 1550155), (31, 650065), (65, 310031), (73, 276055), (137, 147095), (155, 130013), (365, 55211), (403, 50005), (685, 29419), (949, 21235), (1781, 11315), (2015, 10001), (2263, 8905), (4247, 4745)]