21907875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 40974336

約数和(自身を除く): 19066461

約数列:

[1, 3, 5, 11, 15, 25, 33, 47, 55, 75, 113, 125, 141, 165, 235, 275, 339, 375, 517, 565, 705, 825, 1175, 1243, 1375, 1551, 1695, 2585, 2825, 3525, 3729, 4125, 5311, 5875, 6215, 7755, 8475, 12925, 14125, 15933, 17625, 18645, 26555, 31075, 38775, 42375, 58421, 64625, 79665, 93225, 132775, 155375, 175263, 193875, 292105, 398325, 466125, 663875, 876315, 1460525, 1991625, 4381575, 7302625, 21907875]

約数ペア:

[(1, 21907875), (3, 7302625), (5, 4381575), (11, 1991625), (15, 1460525), (25, 876315), (33, 663875), (47, 466125), (55, 398325), (75, 292105), (113, 193875), (125, 175263), (141, 155375), (165, 132775), (235, 93225), (275, 79665), (339, 64625), (375, 58421), (517, 42375), (565, 38775), (705, 31075), (825, 26555), (1175, 18645), (1243, 17625), (1375, 15933), (1551, 14125), (1695, 12925), (2585, 8475), (2825, 7755), (3525, 6215), (3729, 5875), (4125, 5311)]