16921875

素因数分解:

$3^1\times 5^6\times {\mathrm{19}}^2$

素因数の和:71

約数の個数: 42

約数和(自身を含む): 29765244

約数和(自身を除く): 12843369

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 361, 375, 475, 625, 1083, 1425, 1805, 1875, 2375, 3125, 5415, 7125, 9025, 9375, 11875, 15625, 27075, 35625, 45125, 46875, 59375, 135375, 178125, 225625, 296875, 676875, 890625, 1128125, 3384375, 5640625, 16921875]

約数ペア:

[(1, 16921875), (3, 5640625), (5, 3384375), (15, 1128125), (19, 890625), (25, 676875), (57, 296875), (75, 225625), (95, 178125), (125, 135375), (285, 59375), (361, 46875), (375, 45125), (475, 35625), (625, 27075), (1083, 15625), (1425, 11875), (1805, 9375), (1875, 9025), (2375, 7125), (3125, 5415)]