20872560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86969}}^1$

素因数の和:86985

約数の個数: 40

約数和(自身を含む): 64705680

約数和(自身を除く): 43833120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86969, 173938, 260907, 347876, 434845, 521814, 695752, 869690, 1043628, 1304535, 1391504, 1739380, 2087256, 2609070, 3478760, 4174512, 5218140, 6957520, 10436280, 20872560]

約数ペア:

[(1, 20872560), (2, 10436280), (3, 6957520), (4, 5218140), (5, 4174512), (6, 3478760), (8, 2609070), (10, 2087256), (12, 1739380), (15, 1391504), (16, 1304535), (20, 1043628), (24, 869690), (30, 695752), (40, 521814), (48, 434845), (60, 347876), (80, 260907), (120, 173938), (240, 86969)]