20626875

素因数分解:

$3^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:238

約数の個数: 60

約数和(自身を含む): 39393640

約数和(自身を除く): 18766765

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 125, 171, 193, 225, 285, 375, 475, 579, 625, 855, 965, 1125, 1425, 1737, 1875, 2375, 2895, 3667, 4275, 4825, 5625, 7125, 8685, 11001, 11875, 14475, 18335, 21375, 24125, 33003, 35625, 43425, 55005, 72375, 91675, 106875, 120625, 165015, 217125, 275025, 361875, 458375, 825075, 1085625, 1375125, 2291875, 4125375, 6875625, 20626875]

約数ペア:

[(1, 20626875), (3, 6875625), (5, 4125375), (9, 2291875), (15, 1375125), (19, 1085625), (25, 825075), (45, 458375), (57, 361875), (75, 275025), (95, 217125), (125, 165015), (171, 120625), (193, 106875), (225, 91675), (285, 72375), (375, 55005), (475, 43425), (579, 35625), (625, 33003), (855, 24125), (965, 21375), (1125, 18335), (1425, 14475), (1737, 11875), (1875, 11001), (2375, 8685), (2895, 7125), (3667, 5625), (4275, 4825)]