20398380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{947}}^1$

素因数の和:1318

約数の個数: 48

約数和(自身を含む): 57335040

約数和(自身を除く): 36936660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359, 718, 947, 1077, 1436, 1795, 1894, 2154, 2841, 3590, 3788, 4308, 4735, 5385, 5682, 7180, 9470, 10770, 11364, 14205, 18940, 21540, 28410, 56820, 339973, 679946, 1019919, 1359892, 1699865, 2039838, 3399730, 4079676, 5099595, 6799460, 10199190, 20398380]

約数ペア:

[(1, 20398380), (2, 10199190), (3, 6799460), (4, 5099595), (5, 4079676), (6, 3399730), (10, 2039838), (12, 1699865), (15, 1359892), (20, 1019919), (30, 679946), (60, 339973), (359, 56820), (718, 28410), (947, 21540), (1077, 18940), (1436, 14205), (1795, 11364), (1894, 10770), (2154, 9470), (2841, 7180), (3590, 5682), (3788, 5385), (4308, 4735)]