20739680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^3\times {\mathrm{59}}^1$

素因数の和:113

約数の個数: 96

約数和(自身を含む): 53978400

約数和(自身を除く): 33238720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 65, 80, 104, 118, 130, 160, 169, 208, 236, 260, 295, 338, 416, 472, 520, 590, 676, 767, 845, 944, 1040, 1180, 1352, 1534, 1690, 1888, 2080, 2197, 2360, 2704, 3068, 3380, 3835, 4394, 4720, 5408, 6136, 6760, 7670, 8788, 9440, 9971, 10985, 12272, 13520, 15340, 17576, 19942, 21970, 24544, 27040, 30680, 35152, 39884, 43940, 49855, 61360, 70304, 79768, 87880, 99710, 122720, 129623, 159536, 175760, 199420, 259246, 319072, 351520, 398840, 518492, 648115, 797680, 1036984, 1296230, 1595360, 2073968, 2592460, 4147936, 5184920, 10369840, 20739680]

約数ペア:

[(1, 20739680), (2, 10369840), (4, 5184920), (5, 4147936), (8, 2592460), (10, 2073968), (13, 1595360), (16, 1296230), (20, 1036984), (26, 797680), (32, 648115), (40, 518492), (52, 398840), (59, 351520), (65, 319072), (80, 259246), (104, 199420), (118, 175760), (130, 159536), (160, 129623), (169, 122720), (208, 99710), (236, 87880), (260, 79768), (295, 70304), (338, 61360), (416, 49855), (472, 43940), (520, 39884), (590, 35152), (676, 30680), (767, 27040), (845, 24544), (944, 21970), (1040, 19942), (1180, 17576), (1352, 15340), (1534, 13520), (1690, 12272), (1888, 10985), (2080, 9971), (2197, 9440), (2360, 8788), (2704, 7670), (3068, 6760), (3380, 6136), (3835, 5408), (4394, 4720)]