25672720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:512

約数の個数: 80

約数和(自身を含む): 64817280

約数和(自身を除く): 39144560

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 80, 85, 86, 136, 170, 172, 215, 272, 340, 344, 430, 439, 680, 688, 731, 860, 878, 1360, 1462, 1720, 1756, 2195, 2924, 3440, 3512, 3655, 4390, 5848, 7024, 7310, 7463, 8780, 11696, 14620, 14926, 17560, 18877, 29240, 29852, 35120, 37315, 37754, 58480, 59704, 74630, 75508, 94385, 119408, 149260, 151016, 188770, 298520, 302032, 320909, 377540, 597040, 641818, 755080, 1283636, 1510160, 1604545, 2567272, 3209090, 5134544, 6418180, 12836360, 25672720]

約数ペア:

[(1, 25672720), (2, 12836360), (4, 6418180), (5, 5134544), (8, 3209090), (10, 2567272), (16, 1604545), (17, 1510160), (20, 1283636), (34, 755080), (40, 641818), (43, 597040), (68, 377540), (80, 320909), (85, 302032), (86, 298520), (136, 188770), (170, 151016), (172, 149260), (215, 119408), (272, 94385), (340, 75508), (344, 74630), (430, 59704), (439, 58480), (680, 37754), (688, 37315), (731, 35120), (860, 29852), (878, 29240), (1360, 18877), (1462, 17560), (1720, 14926), (1756, 14620), (2195, 11696), (2924, 8780), (3440, 7463), (3512, 7310), (3655, 7024), (4390, 5848)]