79998800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{28571}}^1$

素因数の和:28596

約数の個数: 60

約数和(自身を含む): 219661536

約数和(自身を除く): 139662736

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 28571, 57142, 114284, 142855, 199997, 228568, 285710, 399994, 457136, 571420, 714275, 799988, 999985, 1142840, 1428550, 1599976, 1999970, 2285680, 2857100, 3199952, 3999940, 4999925, 5714200, 7999880, 9999850, 11428400, 15999760, 19999700, 39999400, 79998800]

約数ペア:

[(1, 79998800), (2, 39999400), (4, 19999700), (5, 15999760), (7, 11428400), (8, 9999850), (10, 7999880), (14, 5714200), (16, 4999925), (20, 3999940), (25, 3199952), (28, 2857100), (35, 2285680), (40, 1999970), (50, 1599976), (56, 1428550), (70, 1142840), (80, 999985), (100, 799988), (112, 714275), (140, 571420), (175, 457136), (200, 399994), (280, 285710), (350, 228568), (400, 199997), (560, 142855), (700, 114284), (1400, 57142), (2800, 28571)]