81019920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{337583}}^1$

素因数の和:337599

約数の個数: 40

約数和(自身を含む): 251162496

約数和(自身を除く): 170142576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 337583, 675166, 1012749, 1350332, 1687915, 2025498, 2700664, 3375830, 4050996, 5063745, 5401328, 6751660, 8101992, 10127490, 13503320, 16203984, 20254980, 27006640, 40509960, 81019920]

約数ペア:

[(1, 81019920), (2, 40509960), (3, 27006640), (4, 20254980), (5, 16203984), (6, 13503320), (8, 10127490), (10, 8101992), (12, 6751660), (15, 5401328), (16, 5063745), (20, 4050996), (24, 3375830), (30, 2700664), (40, 2025498), (48, 1687915), (60, 1350332), (80, 1012749), (120, 675166), (240, 337583)]