778530540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{6491}}^1$

素因数の和:8502

約数の個数: 48

約数和(自身を含む): 2181312000

約数和(自身を除く): 1402781460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1999, 3998, 5997, 6491, 7996, 9995, 11994, 12982, 19473, 19990, 23988, 25964, 29985, 32455, 38946, 39980, 59970, 64910, 77892, 97365, 119940, 129820, 194730, 389460, 12975509, 25951018, 38926527, 51902036, 64877545, 77853054, 129755090, 155706108, 194632635, 259510180, 389265270, 778530540]

約数ペア:

[(1, 778530540), (2, 389265270), (3, 259510180), (4, 194632635), (5, 155706108), (6, 129755090), (10, 77853054), (12, 64877545), (15, 51902036), (20, 38926527), (30, 25951018), (60, 12975509), (1999, 389460), (3998, 194730), (5997, 129820), (6491, 119940), (7996, 97365), (9995, 77892), (11994, 64910), (12982, 59970), (19473, 39980), (19990, 38946), (23988, 32455), (25964, 29985)]