21440040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{479}}^1$

素因数の和:866

約数の個数: 64

約数和(自身を含む): 64627200

約数和(自身を除く): 43187160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 373, 479, 746, 958, 1119, 1437, 1492, 1865, 1916, 2238, 2395, 2874, 2984, 3730, 3832, 4476, 4790, 5595, 5748, 7185, 7460, 8952, 9580, 11190, 11496, 14370, 14920, 19160, 22380, 28740, 44760, 57480, 178667, 357334, 536001, 714668, 893335, 1072002, 1429336, 1786670, 2144004, 2680005, 3573340, 4288008, 5360010, 7146680, 10720020, 21440040]

約数ペア:

[(1, 21440040), (2, 10720020), (3, 7146680), (4, 5360010), (5, 4288008), (6, 3573340), (8, 2680005), (10, 2144004), (12, 1786670), (15, 1429336), (20, 1072002), (24, 893335), (30, 714668), (40, 536001), (60, 357334), (120, 178667), (373, 57480), (479, 44760), (746, 28740), (958, 22380), (1119, 19160), (1437, 14920), (1492, 14370), (1865, 11496), (1916, 11190), (2238, 9580), (2395, 8952), (2874, 7460), (2984, 7185), (3730, 5748), (3832, 5595), (4476, 4790)]