4991000

素因数分解:

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

素因数の和:82

約数の個数: 128

約数和(自身を含む): 14376960

約数和(自身を除く): 9385960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 31, 35, 40, 46, 50, 56, 62, 70, 92, 100, 115, 124, 125, 140, 155, 161, 175, 184, 200, 217, 230, 248, 250, 280, 310, 322, 350, 434, 460, 500, 575, 620, 644, 700, 713, 775, 805, 868, 875, 920, 1000, 1085, 1150, 1240, 1288, 1400, 1426, 1550, 1610, 1736, 1750, 2170, 2300, 2852, 2875, 3100, 3220, 3500, 3565, 3875, 4025, 4340, 4600, 4991, 5425, 5704, 5750, 6200, 6440, 7000, 7130, 7750, 8050, 8680, 9982, 10850, 11500, 14260, 15500, 16100, 17825, 19964, 20125, 21700, 23000, 24955, 27125, 28520, 31000, 32200, 35650, 39928, 40250, 43400, 49910, 54250, 71300, 80500, 89125, 99820, 108500, 124775, 142600, 161000, 178250, 199640, 217000, 249550, 356500, 499100, 623875, 713000, 998200, 1247750, 2495500, 4991000]

約数ペア:

[(1, 4991000), (2, 2495500), (4, 1247750), (5, 998200), (7, 713000), (8, 623875), (10, 499100), (14, 356500), (20, 249550), (23, 217000), (25, 199640), (28, 178250), (31, 161000), (35, 142600), (40, 124775), (46, 108500), (50, 99820), (56, 89125), (62, 80500), (70, 71300), (92, 54250), (100, 49910), (115, 43400), (124, 40250), (125, 39928), (140, 35650), (155, 32200), (161, 31000), (175, 28520), (184, 27125), (200, 24955), (217, 23000), (230, 21700), (248, 20125), (250, 19964), (280, 17825), (310, 16100), (322, 15500), (350, 14260), (434, 11500), (460, 10850), (500, 9982), (575, 8680), (620, 8050), (644, 7750), (700, 7130), (713, 7000), (775, 6440), (805, 6200), (868, 5750), (875, 5704), (920, 5425), (1000, 4991), (1085, 4600), (1150, 4340), (1240, 4025), (1288, 3875), (1400, 3565), (1426, 3500), (1550, 3220), (1610, 3100), (1736, 2875), (1750, 2852), (2170, 2300)]