21009750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 53127360

約数和(自身を除く): 32117610

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 109, 125, 150, 218, 250, 257, 327, 375, 514, 545, 654, 750, 771, 1090, 1285, 1542, 1635, 2570, 2725, 3270, 3855, 5450, 6425, 7710, 8175, 12850, 13625, 16350, 19275, 27250, 28013, 32125, 38550, 40875, 56026, 64250, 81750, 84039, 96375, 140065, 168078, 192750, 280130, 420195, 700325, 840390, 1400650, 2100975, 3501625, 4201950, 7003250, 10504875, 21009750]

約数ペア:

[(1, 21009750), (2, 10504875), (3, 7003250), (5, 4201950), (6, 3501625), (10, 2100975), (15, 1400650), (25, 840390), (30, 700325), (50, 420195), (75, 280130), (109, 192750), (125, 168078), (150, 140065), (218, 96375), (250, 84039), (257, 81750), (327, 64250), (375, 56026), (514, 40875), (545, 38550), (654, 32125), (750, 28013), (771, 27250), (1090, 19275), (1285, 16350), (1542, 13625), (1635, 12850), (2570, 8175), (2725, 7710), (3270, 6425), (3855, 5450)]