28780960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:266

約数の個数: 96

約数和(自身を含む): 74490192

約数和(自身を除く): 45709232

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 101, 104, 130, 137, 160, 202, 208, 260, 274, 404, 416, 505, 520, 548, 685, 808, 1010, 1040, 1096, 1313, 1370, 1616, 1781, 2020, 2080, 2192, 2626, 2740, 3232, 3562, 4040, 4384, 5252, 5480, 6565, 7124, 8080, 8905, 10504, 10960, 13130, 13837, 14248, 16160, 17810, 21008, 21920, 26260, 27674, 28496, 35620, 42016, 52520, 55348, 56992, 69185, 71240, 105040, 110696, 138370, 142480, 179881, 210080, 221392, 276740, 284960, 359762, 442784, 553480, 719524, 899405, 1106960, 1439048, 1798810, 2213920, 2878096, 3597620, 5756192, 7195240, 14390480, 28780960]

約数ペア:

[(1, 28780960), (2, 14390480), (4, 7195240), (5, 5756192), (8, 3597620), (10, 2878096), (13, 2213920), (16, 1798810), (20, 1439048), (26, 1106960), (32, 899405), (40, 719524), (52, 553480), (65, 442784), (80, 359762), (101, 284960), (104, 276740), (130, 221392), (137, 210080), (160, 179881), (202, 142480), (208, 138370), (260, 110696), (274, 105040), (404, 71240), (416, 69185), (505, 56992), (520, 55348), (548, 52520), (685, 42016), (808, 35620), (1010, 28496), (1040, 27674), (1096, 26260), (1313, 21920), (1370, 21008), (1616, 17810), (1781, 16160), (2020, 14248), (2080, 13837), (2192, 13130), (2626, 10960), (2740, 10504), (3232, 8905), (3562, 8080), (4040, 7124), (4384, 6565), (5252, 5480)]