261036640

素因数分解:

$2^5\times 5^1\times {\mathrm{461}}^1\times {\mathrm{3539}}^1$

素因数の和:4015

約数の個数: 48

約数和(自身を含む): 618211440

約数和(自身を除く): 357174800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 461, 922, 1844, 2305, 3539, 3688, 4610, 7078, 7376, 9220, 14156, 14752, 17695, 18440, 28312, 35390, 36880, 56624, 70780, 73760, 113248, 141560, 283120, 566240, 1631479, 3262958, 6525916, 8157395, 13051832, 16314790, 26103664, 32629580, 52207328, 65259160, 130518320, 261036640]

約数ペア:

[(1, 261036640), (2, 130518320), (4, 65259160), (5, 52207328), (8, 32629580), (10, 26103664), (16, 16314790), (20, 13051832), (32, 8157395), (40, 6525916), (80, 3262958), (160, 1631479), (461, 566240), (922, 283120), (1844, 141560), (2305, 113248), (3539, 73760), (3688, 70780), (4610, 56624), (7078, 36880), (7376, 35390), (9220, 28312), (14156, 18440), (14752, 17695)]