20340128

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 41640480

約数和(自身を除く): 21300352

約数列:

[1, 2, 4, 8, 16, 32, 53, 67, 106, 134, 179, 212, 268, 358, 424, 536, 716, 848, 1072, 1432, 1696, 2144, 2864, 3551, 5728, 7102, 9487, 11993, 14204, 18974, 23986, 28408, 37948, 47972, 56816, 75896, 95944, 113632, 151792, 191888, 303584, 383776, 635629, 1271258, 2542516, 5085032, 10170064, 20340128]

約数ペア:

[(1, 20340128), (2, 10170064), (4, 5085032), (8, 2542516), (16, 1271258), (32, 635629), (53, 383776), (67, 303584), (106, 191888), (134, 151792), (179, 113632), (212, 95944), (268, 75896), (358, 56816), (424, 47972), (536, 37948), (716, 28408), (848, 23986), (1072, 18974), (1432, 14204), (1696, 11993), (2144, 9487), (2864, 7102), (3551, 5728)]