28511875

素因数分解:

$5^4\times 7^4\times {\mathrm{19}}^1$

素因数の和:67

約数の個数: 50

約数和(自身を含む): 43751620

約数和(自身を除く): 15239745

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 125, 133, 175, 245, 343, 475, 625, 665, 875, 931, 1225, 1715, 2375, 2401, 3325, 4375, 4655, 6125, 6517, 8575, 11875, 12005, 16625, 23275, 30625, 32585, 42875, 45619, 60025, 83125, 116375, 162925, 214375, 228095, 300125, 581875, 814625, 1140475, 1500625, 4073125, 5702375, 28511875]

約数ペア:

[(1, 28511875), (5, 5702375), (7, 4073125), (19, 1500625), (25, 1140475), (35, 814625), (49, 581875), (95, 300125), (125, 228095), (133, 214375), (175, 162925), (245, 116375), (343, 83125), (475, 60025), (625, 45619), (665, 42875), (875, 32585), (931, 30625), (1225, 23275), (1715, 16625), (2375, 12005), (2401, 11875), (3325, 8575), (4375, 6517), (4655, 6125)]