20369970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{947}}^1$

素因数の和:1199

約数の個数: 48

約数和(自身を含む): 53239680

約数和(自身を除く): 32869710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 239, 478, 717, 947, 1195, 1434, 1894, 2151, 2390, 2841, 3585, 4302, 4735, 5682, 7170, 8523, 9470, 10755, 14205, 17046, 21510, 28410, 42615, 85230, 226333, 452666, 678999, 1131665, 1357998, 2036997, 2263330, 3394995, 4073994, 6789990, 10184985, 20369970]

約数ペア:

[(1, 20369970), (2, 10184985), (3, 6789990), (5, 4073994), (6, 3394995), (9, 2263330), (10, 2036997), (15, 1357998), (18, 1131665), (30, 678999), (45, 452666), (90, 226333), (239, 85230), (478, 42615), (717, 28410), (947, 21510), (1195, 17046), (1434, 14205), (1894, 10755), (2151, 9470), (2390, 8523), (2841, 7170), (3585, 5682), (4302, 4735)]