20653520

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{599}}^1$

素因数の和:1043

約数の個数: 40

約数和(自身を含む): 48211200

約数和(自身を除く): 27557680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 599, 862, 1198, 1724, 2155, 2396, 2995, 3448, 4310, 4792, 5990, 6896, 8620, 9584, 11980, 17240, 23960, 34480, 47920, 258169, 516338, 1032676, 1290845, 2065352, 2581690, 4130704, 5163380, 10326760, 20653520]

約数ペア:

[(1, 20653520), (2, 10326760), (4, 5163380), (5, 4130704), (8, 2581690), (10, 2065352), (16, 1290845), (20, 1032676), (40, 516338), (80, 258169), (431, 47920), (599, 34480), (862, 23960), (1198, 17240), (1724, 11980), (2155, 9584), (2396, 8620), (2995, 6896), (3448, 5990), (4310, 4792)]