20526240

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:215

約数の個数: 192

約数和(自身を含む): 76204800

約数和(自身を除く): 55678560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 41, 42, 48, 56, 60, 70, 80, 82, 84, 96, 105, 112, 120, 123, 140, 149, 160, 164, 168, 205, 210, 224, 240, 246, 280, 287, 298, 328, 336, 410, 420, 447, 480, 492, 560, 574, 596, 615, 656, 672, 745, 820, 840, 861, 894, 984, 1043, 1120, 1148, 1192, 1230, 1312, 1435, 1490, 1640, 1680, 1722, 1788, 1968, 2086, 2235, 2296, 2384, 2460, 2870, 2980, 3129, 3280, 3360, 3444, 3576, 3936, 4172, 4305, 4470, 4592, 4768, 4920, 5215, 5740, 5960, 6109, 6258, 6560, 6888, 7152, 8344, 8610, 8940, 9184, 9840, 10430, 11480, 11920, 12218, 12516, 13776, 14304, 15645, 16688, 17220, 17880, 18327, 19680, 20860, 22960, 23840, 24436, 25032, 27552, 30545, 31290, 33376, 34440, 35760, 36654, 41720, 42763, 45920, 48872, 50064, 61090, 62580, 68880, 71520, 73308, 83440, 85526, 91635, 97744, 100128, 122180, 125160, 128289, 137760, 146616, 166880, 171052, 183270, 195488, 213815, 244360, 250320, 256578, 293232, 342104, 366540, 427630, 488720, 500640, 513156, 586464, 641445, 684208, 733080, 855260, 977440, 1026312, 1282890, 1368416, 1466160, 1710520, 2052624, 2565780, 2932320, 3421040, 4105248, 5131560, 6842080, 10263120, 20526240]

約数ペア:

[(1, 20526240), (2, 10263120), (3, 6842080), (4, 5131560), (5, 4105248), (6, 3421040), (7, 2932320), (8, 2565780), (10, 2052624), (12, 1710520), (14, 1466160), (15, 1368416), (16, 1282890), (20, 1026312), (21, 977440), (24, 855260), (28, 733080), (30, 684208), (32, 641445), (35, 586464), (40, 513156), (41, 500640), (42, 488720), (48, 427630), (56, 366540), (60, 342104), (70, 293232), (80, 256578), (82, 250320), (84, 244360), (96, 213815), (105, 195488), (112, 183270), (120, 171052), (123, 166880), (140, 146616), (149, 137760), (160, 128289), (164, 125160), (168, 122180), (205, 100128), (210, 97744), (224, 91635), (240, 85526), (246, 83440), (280, 73308), (287, 71520), (298, 68880), (328, 62580), (336, 61090), (410, 50064), (420, 48872), (447, 45920), (480, 42763), (492, 41720), (560, 36654), (574, 35760), (596, 34440), (615, 33376), (656, 31290), (672, 30545), (745, 27552), (820, 25032), (840, 24436), (861, 23840), (894, 22960), (984, 20860), (1043, 19680), (1120, 18327), (1148, 17880), (1192, 17220), (1230, 16688), (1312, 15645), (1435, 14304), (1490, 13776), (1640, 12516), (1680, 12218), (1722, 11920), (1788, 11480), (1968, 10430), (2086, 9840), (2235, 9184), (2296, 8940), (2384, 8610), (2460, 8344), (2870, 7152), (2980, 6888), (3129, 6560), (3280, 6258), (3360, 6109), (3444, 5960), (3576, 5740), (3936, 5215), (4172, 4920), (4305, 4768), (4470, 4592)]