20364640

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7487}}^1$

素因数の和:7519

約数の個数: 48

約数和(自身を含む): 50948352

約数和(自身を除く): 30583712

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7487, 14974, 29948, 37435, 59896, 74870, 119792, 127279, 149740, 239584, 254558, 299480, 509116, 598960, 636395, 1018232, 1197920, 1272790, 2036464, 2545580, 4072928, 5091160, 10182320, 20364640]

約数ペア:

[(1, 20364640), (2, 10182320), (4, 5091160), (5, 4072928), (8, 2545580), (10, 2036464), (16, 1272790), (17, 1197920), (20, 1018232), (32, 636395), (34, 598960), (40, 509116), (68, 299480), (80, 254558), (85, 239584), (136, 149740), (160, 127279), (170, 119792), (272, 74870), (340, 59896), (544, 37435), (680, 29948), (1360, 14974), (2720, 7487)]