81754920

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:686

約数の個数: 192

約数和(自身を含む): 297198720

約数和(自身を除く): 215443800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 81, 90, 104, 108, 117, 120, 130, 135, 156, 162, 180, 195, 216, 234, 243, 260, 270, 312, 324, 351, 360, 390, 405, 468, 486, 520, 540, 585, 647, 648, 702, 780, 810, 936, 972, 1053, 1080, 1170, 1215, 1294, 1404, 1560, 1620, 1755, 1941, 1944, 2106, 2340, 2430, 2588, 2808, 3159, 3235, 3240, 3510, 3882, 4212, 4680, 4860, 5176, 5265, 5823, 6318, 6470, 7020, 7764, 8411, 8424, 9705, 9720, 10530, 11646, 12636, 12940, 14040, 15528, 15795, 16822, 17469, 19410, 21060, 23292, 25233, 25272, 25880, 29115, 31590, 33644, 34938, 38820, 42055, 42120, 46584, 50466, 52407, 58230, 63180, 67288, 69876, 75699, 77640, 84110, 87345, 100932, 104814, 116460, 126165, 126360, 139752, 151398, 157221, 168220, 174690, 201864, 209628, 227097, 232920, 252330, 262035, 302796, 314442, 336440, 349380, 378495, 419256, 454194, 504660, 524070, 605592, 628884, 681291, 698760, 756990, 786105, 908388, 1009320, 1048140, 1135485, 1257768, 1362582, 1513980, 1572210, 1816776, 2043873, 2096280, 2270970, 2725164, 3027960, 3144420, 3406455, 4087746, 4541940, 5450328, 6288840, 6812910, 8175492, 9083880, 10219365, 13625820, 16350984, 20438730, 27251640, 40877460, 81754920]

約数ペア:

[(1, 81754920), (2, 40877460), (3, 27251640), (4, 20438730), (5, 16350984), (6, 13625820), (8, 10219365), (9, 9083880), (10, 8175492), (12, 6812910), (13, 6288840), (15, 5450328), (18, 4541940), (20, 4087746), (24, 3406455), (26, 3144420), (27, 3027960), (30, 2725164), (36, 2270970), (39, 2096280), (40, 2043873), (45, 1816776), (52, 1572210), (54, 1513980), (60, 1362582), (65, 1257768), (72, 1135485), (78, 1048140), (81, 1009320), (90, 908388), (104, 786105), (108, 756990), (117, 698760), (120, 681291), (130, 628884), (135, 605592), (156, 524070), (162, 504660), (180, 454194), (195, 419256), (216, 378495), (234, 349380), (243, 336440), (260, 314442), (270, 302796), (312, 262035), (324, 252330), (351, 232920), (360, 227097), (390, 209628), (405, 201864), (468, 174690), (486, 168220), (520, 157221), (540, 151398), (585, 139752), (647, 126360), (648, 126165), (702, 116460), (780, 104814), (810, 100932), (936, 87345), (972, 84110), (1053, 77640), (1080, 75699), (1170, 69876), (1215, 67288), (1294, 63180), (1404, 58230), (1560, 52407), (1620, 50466), (1755, 46584), (1941, 42120), (1944, 42055), (2106, 38820), (2340, 34938), (2430, 33644), (2588, 31590), (2808, 29115), (3159, 25880), (3235, 25272), (3240, 25233), (3510, 23292), (3882, 21060), (4212, 19410), (4680, 17469), (4860, 16822), (5176, 15795), (5265, 15528), (5823, 14040), (6318, 12940), (6470, 12636), (7020, 11646), (7764, 10530), (8411, 9720), (8424, 9705)]