1851655120

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^2\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 180

約数和(自身を含む): 5151363372

約数和(自身を除く): 3299708252

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 70, 80, 82, 98, 112, 140, 164, 196, 205, 245, 280, 281, 287, 328, 392, 410, 490, 560, 562, 574, 656, 784, 820, 980, 1124, 1148, 1405, 1435, 1640, 1681, 1960, 1967, 2009, 2248, 2296, 2810, 2870, 3280, 3362, 3920, 3934, 4018, 4496, 4592, 5620, 5740, 6724, 7868, 8036, 8405, 9835, 10045, 11240, 11480, 11521, 11767, 13448, 13769, 15736, 16072, 16810, 19670, 20090, 22480, 22960, 23042, 23534, 26896, 27538, 31472, 32144, 33620, 39340, 40180, 46084, 47068, 55076, 57605, 58835, 67240, 68845, 78680, 80360, 80647, 82369, 92168, 94136, 110152, 115210, 117670, 134480, 137690, 157360, 160720, 161294, 164738, 184336, 188272, 220304, 230420, 235340, 275380, 322588, 329476, 403235, 411845, 460840, 470680, 472361, 550760, 564529, 645176, 658952, 806470, 823690, 921680, 941360, 944722, 1101520, 1129058, 1290352, 1317904, 1612940, 1647380, 1889444, 2258116, 2361805, 2822645, 3225880, 3294760, 3306527, 3778888, 4516232, 4723610, 5645290, 6451760, 6589520, 6613054, 7557776, 9032464, 9447220, 11290580, 13226108, 16532635, 18894440, 22581160, 23145689, 26452216, 33065270, 37788880, 45162320, 46291378, 52904432, 66130540, 92582756, 115728445, 132261080, 185165512, 231456890, 264522160, 370331024, 462913780, 925827560, 1851655120]

約数ペア:

[(1, 1851655120), (2, 925827560), (4, 462913780), (5, 370331024), (7, 264522160), (8, 231456890), (10, 185165512), (14, 132261080), (16, 115728445), (20, 92582756), (28, 66130540), (35, 52904432), (40, 46291378), (41, 45162320), (49, 37788880), (56, 33065270), (70, 26452216), (80, 23145689), (82, 22581160), (98, 18894440), (112, 16532635), (140, 13226108), (164, 11290580), (196, 9447220), (205, 9032464), (245, 7557776), (280, 6613054), (281, 6589520), (287, 6451760), (328, 5645290), (392, 4723610), (410, 4516232), (490, 3778888), (560, 3306527), (562, 3294760), (574, 3225880), (656, 2822645), (784, 2361805), (820, 2258116), (980, 1889444), (1124, 1647380), (1148, 1612940), (1405, 1317904), (1435, 1290352), (1640, 1129058), (1681, 1101520), (1960, 944722), (1967, 941360), (2009, 921680), (2248, 823690), (2296, 806470), (2810, 658952), (2870, 645176), (3280, 564529), (3362, 550760), (3920, 472361), (3934, 470680), (4018, 460840), (4496, 411845), (4592, 403235), (5620, 329476), (5740, 322588), (6724, 275380), (7868, 235340), (8036, 230420), (8405, 220304), (9835, 188272), (10045, 184336), (11240, 164738), (11480, 161294), (11521, 160720), (11767, 157360), (13448, 137690), (13769, 134480), (15736, 117670), (16072, 115210), (16810, 110152), (19670, 94136), (20090, 92168), (22480, 82369), (22960, 80647), (23042, 80360), (23534, 78680), (26896, 68845), (27538, 67240), (31472, 58835), (32144, 57605), (33620, 55076), (39340, 47068), (40180, 46084)]