28713020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 71187984

約数和(自身を除く): 42474964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 140, 166, 196, 245, 332, 353, 415, 490, 581, 706, 830, 980, 1162, 1412, 1660, 1765, 2324, 2471, 2905, 3530, 4067, 4942, 5810, 7060, 8134, 9884, 11620, 12355, 16268, 17297, 20335, 24710, 29299, 34594, 40670, 49420, 58598, 69188, 81340, 86485, 117196, 146495, 172970, 205093, 292990, 345940, 410186, 585980, 820372, 1025465, 1435651, 2050930, 2871302, 4101860, 5742604, 7178255, 14356510, 28713020]

約数ペア:

[(1, 28713020), (2, 14356510), (4, 7178255), (5, 5742604), (7, 4101860), (10, 2871302), (14, 2050930), (20, 1435651), (28, 1025465), (35, 820372), (49, 585980), (70, 410186), (83, 345940), (98, 292990), (140, 205093), (166, 172970), (196, 146495), (245, 117196), (332, 86485), (353, 81340), (415, 69188), (490, 58598), (581, 49420), (706, 40670), (830, 34594), (980, 29299), (1162, 24710), (1412, 20335), (1660, 17297), (1765, 16268), (2324, 12355), (2471, 11620), (2905, 9884), (3530, 8134), (4067, 7060), (4942, 5810)]