25378960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18661}}^1$

素因数の和:18691

約数の個数: 40

約数和(自身を含む): 62480376

約数和(自身を除く): 37101416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 18661, 37322, 74644, 93305, 149288, 186610, 298576, 317237, 373220, 634474, 746440, 1268948, 1492880, 1586185, 2537896, 3172370, 5075792, 6344740, 12689480, 25378960]

約数ペア:

[(1, 25378960), (2, 12689480), (4, 6344740), (5, 5075792), (8, 3172370), (10, 2537896), (16, 1586185), (17, 1492880), (20, 1268948), (34, 746440), (40, 634474), (68, 373220), (80, 317237), (85, 298576), (136, 186610), (170, 149288), (272, 93305), (340, 74644), (680, 37322), (1360, 18661)]