21125625

素因数分解:

$3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{593}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 37113120

約数和(自身を除く): 15987495

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 593, 625, 1425, 1779, 1875, 2375, 2965, 7125, 8895, 11267, 11875, 14825, 33801, 35625, 44475, 56335, 74125, 169005, 222375, 281675, 370625, 845025, 1111875, 1408375, 4225125, 7041875, 21125625]

約数ペア:

[(1, 21125625), (3, 7041875), (5, 4225125), (15, 1408375), (19, 1111875), (25, 845025), (57, 370625), (75, 281675), (95, 222375), (125, 169005), (285, 74125), (375, 56335), (475, 44475), (593, 35625), (625, 33801), (1425, 14825), (1779, 11875), (1875, 11267), (2375, 8895), (2965, 7125)]