255888880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7937}}^1$

素因数の和:7994

約数の個数: 80

約数和(自身を含む): 661457664

約数和(自身を除く): 405568784

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 7937, 8060, 15874, 16120, 31748, 32240, 39685, 63496, 79370, 103181, 126992, 158740, 206362, 246047, 317480, 412724, 492094, 515905, 634960, 825448, 984188, 1031810, 1230235, 1650896, 1968376, 2063620, 2460470, 3198611, 3936752, 4127240, 4920940, 6397222, 8254480, 9841880, 12794444, 15993055, 19683760, 25588888, 31986110, 51177776, 63972220, 127944440, 255888880]

約数ペア:

[(1, 255888880), (2, 127944440), (4, 63972220), (5, 51177776), (8, 31986110), (10, 25588888), (13, 19683760), (16, 15993055), (20, 12794444), (26, 9841880), (31, 8254480), (40, 6397222), (52, 4920940), (62, 4127240), (65, 3936752), (80, 3198611), (104, 2460470), (124, 2063620), (130, 1968376), (155, 1650896), (208, 1230235), (248, 1031810), (260, 984188), (310, 825448), (403, 634960), (496, 515905), (520, 492094), (620, 412724), (806, 317480), (1040, 246047), (1240, 206362), (1612, 158740), (2015, 126992), (2480, 103181), (3224, 79370), (4030, 63496), (6448, 39685), (7937, 32240), (8060, 31748), (15874, 16120)]