19870875

素因数分解:

$3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1039}}^1$

素因数の和:1077

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 18093285

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 255, 375, 425, 765, 1039, 1125, 1275, 2125, 3117, 3825, 5195, 6375, 9351, 15585, 17663, 19125, 25975, 46755, 52989, 77925, 88315, 129875, 158967, 233775, 264945, 389625, 441575, 794835, 1168875, 1324725, 2207875, 3974175, 6623625, 19870875]

約数ペア:

[(1, 19870875), (3, 6623625), (5, 3974175), (9, 2207875), (15, 1324725), (17, 1168875), (25, 794835), (45, 441575), (51, 389625), (75, 264945), (85, 233775), (125, 158967), (153, 129875), (225, 88315), (255, 77925), (375, 52989), (425, 46755), (765, 25975), (1039, 19125), (1125, 17663), (1275, 15585), (2125, 9351), (3117, 6375), (3825, 5195)]