78857800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 192

約数和(自身を含む): 228556800

約数和(自身を除く): 149699000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 31, 35, 40, 46, 50, 56, 62, 70, 79, 92, 100, 115, 124, 140, 155, 158, 161, 175, 184, 200, 217, 230, 248, 280, 310, 316, 322, 350, 395, 434, 460, 553, 575, 620, 632, 644, 700, 713, 775, 790, 805, 868, 920, 1085, 1106, 1150, 1240, 1288, 1400, 1426, 1550, 1580, 1610, 1736, 1817, 1975, 2170, 2212, 2300, 2449, 2765, 2852, 3100, 3160, 3220, 3565, 3634, 3950, 4025, 4340, 4424, 4600, 4898, 4991, 5425, 5530, 5704, 6200, 6440, 7130, 7268, 7900, 8050, 8680, 9085, 9796, 9982, 10850, 11060, 12245, 12719, 13825, 14260, 14536, 15800, 16100, 17143, 17825, 18170, 19592, 19964, 21700, 22120, 24490, 24955, 25438, 27650, 28520, 32200, 34286, 35650, 36340, 39928, 43400, 45425, 48980, 49910, 50876, 55300, 56327, 61225, 63595, 68572, 71300, 72680, 85715, 90850, 97960, 99820, 101752, 110600, 112654, 122450, 124775, 127190, 137144, 142600, 171430, 181700, 199640, 225308, 244900, 249550, 254380, 281635, 317975, 342860, 363400, 394289, 428575, 450616, 489800, 499100, 508760, 563270, 635950, 685720, 788578, 857150, 998200, 1126540, 1271900, 1408175, 1577156, 1714300, 1971445, 2253080, 2543800, 2816350, 3154312, 3428600, 3942890, 5632700, 7885780, 9857225, 11265400, 15771560, 19714450, 39428900, 78857800]

約数ペア:

[(1, 78857800), (2, 39428900), (4, 19714450), (5, 15771560), (7, 11265400), (8, 9857225), (10, 7885780), (14, 5632700), (20, 3942890), (23, 3428600), (25, 3154312), (28, 2816350), (31, 2543800), (35, 2253080), (40, 1971445), (46, 1714300), (50, 1577156), (56, 1408175), (62, 1271900), (70, 1126540), (79, 998200), (92, 857150), (100, 788578), (115, 685720), (124, 635950), (140, 563270), (155, 508760), (158, 499100), (161, 489800), (175, 450616), (184, 428575), (200, 394289), (217, 363400), (230, 342860), (248, 317975), (280, 281635), (310, 254380), (316, 249550), (322, 244900), (350, 225308), (395, 199640), (434, 181700), (460, 171430), (553, 142600), (575, 137144), (620, 127190), (632, 124775), (644, 122450), (700, 112654), (713, 110600), (775, 101752), (790, 99820), (805, 97960), (868, 90850), (920, 85715), (1085, 72680), (1106, 71300), (1150, 68572), (1240, 63595), (1288, 61225), (1400, 56327), (1426, 55300), (1550, 50876), (1580, 49910), (1610, 48980), (1736, 45425), (1817, 43400), (1975, 39928), (2170, 36340), (2212, 35650), (2300, 34286), (2449, 32200), (2765, 28520), (2852, 27650), (3100, 25438), (3160, 24955), (3220, 24490), (3565, 22120), (3634, 21700), (3950, 19964), (4025, 19592), (4340, 18170), (4424, 17825), (4600, 17143), (4898, 16100), (4991, 15800), (5425, 14536), (5530, 14260), (5704, 13825), (6200, 12719), (6440, 12245), (7130, 11060), (7268, 10850), (7900, 9982), (8050, 9796), (8680, 9085)]