28639875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 53374464

約数和(自身を除く): 24734589

約数列:

[1, 3, 5, 11, 15, 25, 33, 53, 55, 75, 125, 131, 159, 165, 265, 275, 375, 393, 583, 655, 795, 825, 1325, 1375, 1441, 1749, 1965, 2915, 3275, 3975, 4125, 4323, 6625, 6943, 7205, 8745, 9825, 14575, 16375, 19875, 20829, 21615, 34715, 36025, 43725, 49125, 72875, 76373, 104145, 108075, 173575, 180125, 218625, 229119, 381865, 520725, 540375, 867875, 1145595, 1909325, 2603625, 5727975, 9546625, 28639875]

約数ペア:

[(1, 28639875), (3, 9546625), (5, 5727975), (11, 2603625), (15, 1909325), (25, 1145595), (33, 867875), (53, 540375), (55, 520725), (75, 381865), (125, 229119), (131, 218625), (159, 180125), (165, 173575), (265, 108075), (275, 104145), (375, 76373), (393, 72875), (583, 49125), (655, 43725), (795, 36025), (825, 34715), (1325, 21615), (1375, 20829), (1441, 19875), (1749, 16375), (1965, 14575), (2915, 9825), (3275, 8745), (3975, 7205), (4125, 6943), (4323, 6625)]