28572560

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4013}}^1$

素因数の和:4115

約数の個数: 40

約数和(自身を含む): 67194360

約数和(自身を除く): 38621800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4013, 7120, 8026, 16052, 20065, 32104, 40130, 64208, 80260, 160520, 321040, 357157, 714314, 1428628, 1785785, 2857256, 3571570, 5714512, 7143140, 14286280, 28572560]

約数ペア:

[(1, 28572560), (2, 14286280), (4, 7143140), (5, 5714512), (8, 3571570), (10, 2857256), (16, 1785785), (20, 1428628), (40, 714314), (80, 357157), (89, 321040), (178, 160520), (356, 80260), (445, 64208), (712, 40130), (890, 32104), (1424, 20065), (1780, 16052), (3560, 8026), (4013, 7120)]