20684625

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{4243}}^1$

素因数の和:4274

約数の個数: 32

約数和(自身を含む): 37075584

約数和(自身を除く): 16390959

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 975, 1625, 4243, 4875, 12729, 21215, 55159, 63645, 106075, 165477, 275795, 318225, 530375, 827385, 1378975, 1591125, 4136925, 6894875, 20684625]

約数ペア:

[(1, 20684625), (3, 6894875), (5, 4136925), (13, 1591125), (15, 1378975), (25, 827385), (39, 530375), (65, 318225), (75, 275795), (125, 165477), (195, 106075), (325, 63645), (375, 55159), (975, 21215), (1625, 12729), (4243, 4875)]