39991000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:254

約数の個数: 128

約数和(自身を含む): 111196800

約数和(自身を除く): 71205800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 100, 116, 125, 140, 145, 175, 197, 200, 203, 232, 250, 280, 290, 350, 394, 406, 500, 580, 700, 725, 788, 812, 875, 985, 1000, 1015, 1160, 1379, 1400, 1450, 1576, 1624, 1750, 1970, 2030, 2758, 2900, 3500, 3625, 3940, 4060, 4925, 5075, 5516, 5713, 5800, 6895, 7000, 7250, 7880, 8120, 9850, 10150, 11032, 11426, 13790, 14500, 19700, 20300, 22852, 24625, 25375, 27580, 28565, 29000, 34475, 39400, 39991, 40600, 45704, 49250, 50750, 55160, 57130, 68950, 79982, 98500, 101500, 114260, 137900, 142825, 159964, 172375, 197000, 199955, 203000, 228520, 275800, 285650, 319928, 344750, 399910, 571300, 689500, 714125, 799820, 999775, 1142600, 1379000, 1428250, 1599640, 1999550, 2856500, 3999100, 4998875, 5713000, 7998200, 9997750, 19995500, 39991000]

約数ペア:

[(1, 39991000), (2, 19995500), (4, 9997750), (5, 7998200), (7, 5713000), (8, 4998875), (10, 3999100), (14, 2856500), (20, 1999550), (25, 1599640), (28, 1428250), (29, 1379000), (35, 1142600), (40, 999775), (50, 799820), (56, 714125), (58, 689500), (70, 571300), (100, 399910), (116, 344750), (125, 319928), (140, 285650), (145, 275800), (175, 228520), (197, 203000), (200, 199955), (203, 197000), (232, 172375), (250, 159964), (280, 142825), (290, 137900), (350, 114260), (394, 101500), (406, 98500), (500, 79982), (580, 68950), (700, 57130), (725, 55160), (788, 50750), (812, 49250), (875, 45704), (985, 40600), (1000, 39991), (1015, 39400), (1160, 34475), (1379, 29000), (1400, 28565), (1450, 27580), (1576, 25375), (1624, 24625), (1750, 22852), (1970, 20300), (2030, 19700), (2758, 14500), (2900, 13790), (3500, 11426), (3625, 11032), (3940, 10150), (4060, 9850), (4925, 8120), (5075, 7880), (5516, 7250), (5713, 7000), (5800, 6895)]