21196875

素因数分解:

$3^1\times 5^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:71

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 23800245

約数列:

[1, 3, 5, 7, 15, 17, 19, 21, 25, 35, 51, 57, 75, 85, 95, 105, 119, 125, 133, 175, 255, 285, 323, 357, 375, 399, 425, 475, 525, 595, 625, 665, 875, 969, 1275, 1425, 1615, 1785, 1875, 1995, 2125, 2261, 2375, 2625, 2975, 3125, 3325, 4375, 4845, 6375, 6783, 7125, 8075, 8925, 9375, 9975, 10625, 11305, 11875, 13125, 14875, 16625, 21875, 24225, 31875, 33915, 35625, 40375, 44625, 49875, 53125, 56525, 59375, 65625, 74375, 83125, 121125, 159375, 169575, 178125, 201875, 223125, 249375, 282625, 371875, 415625, 605625, 847875, 1009375, 1115625, 1246875, 1413125, 3028125, 4239375, 7065625, 21196875]

約数ペア:

[(1, 21196875), (3, 7065625), (5, 4239375), (7, 3028125), (15, 1413125), (17, 1246875), (19, 1115625), (21, 1009375), (25, 847875), (35, 605625), (51, 415625), (57, 371875), (75, 282625), (85, 249375), (95, 223125), (105, 201875), (119, 178125), (125, 169575), (133, 159375), (175, 121125), (255, 83125), (285, 74375), (323, 65625), (357, 59375), (375, 56525), (399, 53125), (425, 49875), (475, 44625), (525, 40375), (595, 35625), (625, 33915), (665, 31875), (875, 24225), (969, 21875), (1275, 16625), (1425, 14875), (1615, 13125), (1785, 11875), (1875, 11305), (1995, 10625), (2125, 9975), (2261, 9375), (2375, 8925), (2625, 8075), (2975, 7125), (3125, 6783), (3325, 6375), (4375, 4845)]