20396260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25326620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 239, 251, 340, 478, 502, 956, 1004, 1195, 1255, 2390, 2510, 4063, 4267, 4780, 5020, 8126, 8534, 16252, 17068, 20315, 21335, 40630, 42670, 59989, 81260, 85340, 119978, 239956, 299945, 599890, 1019813, 1199780, 2039626, 4079252, 5099065, 10198130, 20396260]

約数ペア:

[(1, 20396260), (2, 10198130), (4, 5099065), (5, 4079252), (10, 2039626), (17, 1199780), (20, 1019813), (34, 599890), (68, 299945), (85, 239956), (170, 119978), (239, 85340), (251, 81260), (340, 59989), (478, 42670), (502, 40630), (956, 21335), (1004, 20315), (1195, 17068), (1255, 16252), (2390, 8534), (2510, 8126), (4063, 5020), (4267, 4780)]