254656520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{120121}}^1$

素因数の和:120185

約数の個数: 32

約数和(自身を含む): 583792920

約数和(自身を除く): 329136400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 120121, 240242, 480484, 600605, 960968, 1201210, 2402420, 4804840, 6366413, 12732826, 25465652, 31832065, 50931304, 63664130, 127328260, 254656520]

約数ペア:

[(1, 254656520), (2, 127328260), (4, 63664130), (5, 50931304), (8, 31832065), (10, 25465652), (20, 12732826), (40, 6366413), (53, 4804840), (106, 2402420), (212, 1201210), (265, 960968), (424, 600605), (530, 480484), (1060, 240242), (2120, 120121)]