21839820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1523}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 61447680

約数和(自身を除く): 39607860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1434, 1523, 2390, 2868, 3046, 3585, 4569, 4780, 6092, 7170, 7615, 9138, 14340, 15230, 18276, 22845, 30460, 45690, 91380, 363997, 727994, 1091991, 1455988, 1819985, 2183982, 3639970, 4367964, 5459955, 7279940, 10919910, 21839820]

約数ペア:

[(1, 21839820), (2, 10919910), (3, 7279940), (4, 5459955), (5, 4367964), (6, 3639970), (10, 2183982), (12, 1819985), (15, 1455988), (20, 1091991), (30, 727994), (60, 363997), (239, 91380), (478, 45690), (717, 30460), (956, 22845), (1195, 18276), (1434, 15230), (1523, 14340), (2390, 9138), (2868, 7615), (3046, 7170), (3585, 6092), (4569, 4780)]