25978000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:473

約数の個数: 80

約数和(自身を含む): 64995840

約数和(自身を除く): 39017840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 400, 419, 496, 500, 620, 775, 838, 1000, 1240, 1550, 1676, 2000, 2095, 2480, 3100, 3352, 3875, 4190, 6200, 6704, 7750, 8380, 10475, 12400, 12989, 15500, 16760, 20950, 25978, 31000, 33520, 41900, 51956, 52375, 62000, 64945, 83800, 103912, 104750, 129890, 167600, 207824, 209500, 259780, 324725, 419000, 519560, 649450, 838000, 1039120, 1298900, 1623625, 2597800, 3247250, 5195600, 6494500, 12989000, 25978000]

約数ペア:

[(1, 25978000), (2, 12989000), (4, 6494500), (5, 5195600), (8, 3247250), (10, 2597800), (16, 1623625), (20, 1298900), (25, 1039120), (31, 838000), (40, 649450), (50, 519560), (62, 419000), (80, 324725), (100, 259780), (124, 209500), (125, 207824), (155, 167600), (200, 129890), (248, 104750), (250, 103912), (310, 83800), (400, 64945), (419, 62000), (496, 52375), (500, 51956), (620, 41900), (775, 33520), (838, 31000), (1000, 25978), (1240, 20950), (1550, 16760), (1676, 15500), (2000, 12989), (2095, 12400), (2480, 10475), (3100, 8380), (3352, 7750), (3875, 6704), (4190, 6200)]