81705750

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 237219840

約数和(自身を除く): 155514090

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 79, 105, 125, 150, 158, 175, 197, 210, 237, 250, 350, 375, 394, 395, 474, 525, 553, 591, 750, 790, 875, 985, 1050, 1106, 1182, 1185, 1379, 1659, 1750, 1970, 1975, 2370, 2625, 2758, 2765, 2955, 3318, 3950, 4137, 4925, 5250, 5530, 5910, 5925, 6895, 8274, 8295, 9850, 9875, 11850, 13790, 13825, 14775, 15563, 16590, 19750, 20685, 24625, 27650, 29550, 29625, 31126, 34475, 41370, 41475, 46689, 49250, 59250, 68950, 69125, 73875, 77815, 82950, 93378, 103425, 108941, 138250, 147750, 155630, 172375, 206850, 207375, 217882, 233445, 326823, 344750, 389075, 414750, 466890, 517125, 544705, 653646, 778150, 1034250, 1089410, 1167225, 1634115, 1945375, 2334450, 2723525, 3268230, 3890750, 5447050, 5836125, 8170575, 11672250, 13617625, 16341150, 27235250, 40852875, 81705750]

約数ペア:

[(1, 81705750), (2, 40852875), (3, 27235250), (5, 16341150), (6, 13617625), (7, 11672250), (10, 8170575), (14, 5836125), (15, 5447050), (21, 3890750), (25, 3268230), (30, 2723525), (35, 2334450), (42, 1945375), (50, 1634115), (70, 1167225), (75, 1089410), (79, 1034250), (105, 778150), (125, 653646), (150, 544705), (158, 517125), (175, 466890), (197, 414750), (210, 389075), (237, 344750), (250, 326823), (350, 233445), (375, 217882), (394, 207375), (395, 206850), (474, 172375), (525, 155630), (553, 147750), (591, 138250), (750, 108941), (790, 103425), (875, 93378), (985, 82950), (1050, 77815), (1106, 73875), (1182, 69125), (1185, 68950), (1379, 59250), (1659, 49250), (1750, 46689), (1970, 41475), (1975, 41370), (2370, 34475), (2625, 31126), (2758, 29625), (2765, 29550), (2955, 27650), (3318, 24625), (3950, 20685), (4137, 19750), (4925, 16590), (5250, 15563), (5530, 14775), (5910, 13825), (5925, 13790), (6895, 11850), (8274, 9875), (8295, 9850)]