31456640

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2137}}^1$

素因数の和:2179

約数の個数: 64

約数和(自身を含む): 78507360

約数和(自身を除く): 47050720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1472, 1840, 2137, 2944, 3680, 4274, 7360, 8548, 10685, 14720, 17096, 21370, 34192, 42740, 49151, 68384, 85480, 98302, 136768, 170960, 196604, 245755, 273536, 341920, 393208, 491510, 683840, 786416, 983020, 1367680, 1572832, 1966040, 3145664, 3932080, 6291328, 7864160, 15728320, 31456640]

約数ペア:

[(1, 31456640), (2, 15728320), (4, 7864160), (5, 6291328), (8, 3932080), (10, 3145664), (16, 1966040), (20, 1572832), (23, 1367680), (32, 983020), (40, 786416), (46, 683840), (64, 491510), (80, 393208), (92, 341920), (115, 273536), (128, 245755), (160, 196604), (184, 170960), (230, 136768), (320, 98302), (368, 85480), (460, 68384), (640, 49151), (736, 42740), (920, 34192), (1472, 21370), (1840, 17096), (2137, 14720), (2944, 10685), (3680, 8548), (4274, 7360)]