21520560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89669}}^1$

素因数の和:89685

約数の個数: 40

約数和(自身を含む): 66714480

約数和(自身を除く): 45193920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89669, 179338, 269007, 358676, 448345, 538014, 717352, 896690, 1076028, 1345035, 1434704, 1793380, 2152056, 2690070, 3586760, 4304112, 5380140, 7173520, 10760280, 21520560]

約数ペア:

[(1, 21520560), (2, 10760280), (3, 7173520), (4, 5380140), (5, 4304112), (6, 3586760), (8, 2690070), (10, 2152056), (12, 1793380), (15, 1434704), (16, 1345035), (20, 1076028), (24, 896690), (30, 717352), (40, 538014), (48, 448345), (60, 358676), (80, 269007), (120, 179338), (240, 89669)]