21202125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 41513472

約数和(自身を除く): 20311347

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 125, 175, 197, 205, 287, 375, 525, 591, 615, 861, 875, 985, 1025, 1379, 1435, 2625, 2955, 3075, 4137, 4305, 4925, 5125, 6895, 7175, 8077, 14775, 15375, 20685, 21525, 24231, 24625, 34475, 35875, 40385, 56539, 73875, 103425, 107625, 121155, 169617, 172375, 201925, 282695, 517125, 605775, 848085, 1009625, 1413475, 3028875, 4240425, 7067375, 21202125]

約数ペア:

[(1, 21202125), (3, 7067375), (5, 4240425), (7, 3028875), (15, 1413475), (21, 1009625), (25, 848085), (35, 605775), (41, 517125), (75, 282695), (105, 201925), (123, 172375), (125, 169617), (175, 121155), (197, 107625), (205, 103425), (287, 73875), (375, 56539), (525, 40385), (591, 35875), (615, 34475), (861, 24625), (875, 24231), (985, 21525), (1025, 20685), (1379, 15375), (1435, 14775), (2625, 8077), (2955, 7175), (3075, 6895), (4137, 5125), (4305, 4925)]