19717500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{239}}^1$

素因数の和:277

約数の個数: 120

約数和(自身を含む): 62979840

約数和(自身を除く): 43262340

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 25, 30, 33, 44, 50, 55, 60, 66, 75, 100, 110, 125, 132, 150, 165, 220, 239, 250, 275, 300, 330, 375, 478, 500, 550, 625, 660, 717, 750, 825, 956, 1100, 1195, 1250, 1375, 1434, 1500, 1650, 1875, 2390, 2500, 2629, 2750, 2868, 3300, 3585, 3750, 4125, 4780, 5258, 5500, 5975, 6875, 7170, 7500, 7887, 8250, 10516, 11950, 13145, 13750, 14340, 15774, 16500, 17925, 20625, 23900, 26290, 27500, 29875, 31548, 35850, 39435, 41250, 52580, 59750, 65725, 71700, 78870, 82500, 89625, 119500, 131450, 149375, 157740, 179250, 197175, 262900, 298750, 328625, 358500, 394350, 448125, 597500, 657250, 788700, 896250, 985875, 1314500, 1643125, 1792500, 1971750, 3286250, 3943500, 4929375, 6572500, 9858750, 19717500]

約数ペア:

[(1, 19717500), (2, 9858750), (3, 6572500), (4, 4929375), (5, 3943500), (6, 3286250), (10, 1971750), (11, 1792500), (12, 1643125), (15, 1314500), (20, 985875), (22, 896250), (25, 788700), (30, 657250), (33, 597500), (44, 448125), (50, 394350), (55, 358500), (60, 328625), (66, 298750), (75, 262900), (100, 197175), (110, 179250), (125, 157740), (132, 149375), (150, 131450), (165, 119500), (220, 89625), (239, 82500), (250, 78870), (275, 71700), (300, 65725), (330, 59750), (375, 52580), (478, 41250), (500, 39435), (550, 35850), (625, 31548), (660, 29875), (717, 27500), (750, 26290), (825, 23900), (956, 20625), (1100, 17925), (1195, 16500), (1250, 15774), (1375, 14340), (1434, 13750), (1500, 13145), (1650, 11950), (1875, 10516), (2390, 8250), (2500, 7887), (2629, 7500), (2750, 7170), (2868, 6875), (3300, 5975), (3585, 5500), (3750, 5258), (4125, 4780)]