21631875

素因数分解:

$3^1\times 5^4\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 40

約数和(自身を含む): 36738240

約数和(自身を除く): 15106365

約数列:

[1, 3, 5, 15, 25, 75, 83, 125, 139, 249, 375, 415, 417, 625, 695, 1245, 1875, 2075, 2085, 3475, 6225, 10375, 10425, 11537, 17375, 31125, 34611, 51875, 52125, 57685, 86875, 155625, 173055, 260625, 288425, 865275, 1442125, 4326375, 7210625, 21631875]

約数ペア:

[(1, 21631875), (3, 7210625), (5, 4326375), (15, 1442125), (25, 865275), (75, 288425), (83, 260625), (125, 173055), (139, 155625), (249, 86875), (375, 57685), (415, 52125), (417, 51875), (625, 34611), (695, 31125), (1245, 17375), (1875, 11537), (2075, 10425), (2085, 10375), (3475, 6225)]