438420140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1\times {\mathrm{1993}}^1$

素因数の和:2666

約数の個数: 48

約数和(自身を含む): 976836672

約数和(自身を除く): 538416532

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 647, 1294, 1993, 2588, 3235, 3986, 6470, 7972, 9965, 10999, 12940, 19930, 21998, 33881, 39860, 43996, 54995, 67762, 109990, 135524, 169405, 219980, 338810, 677620, 1289471, 2578942, 5157884, 6447355, 12894710, 21921007, 25789420, 43842014, 87684028, 109605035, 219210070, 438420140]

約数ペア:

[(1, 438420140), (2, 219210070), (4, 109605035), (5, 87684028), (10, 43842014), (17, 25789420), (20, 21921007), (34, 12894710), (68, 6447355), (85, 5157884), (170, 2578942), (340, 1289471), (647, 677620), (1294, 338810), (1993, 219980), (2588, 169405), (3235, 135524), (3986, 109990), (6470, 67762), (7972, 54995), (9965, 43996), (10999, 39860), (12940, 33881), (19930, 21998)]