81218760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3119}}^1$

素因数の和:3171

約数の個数: 128

約数和(自身を含む): 287539200

約数和(自身を除く): 206320440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1736, 1860, 2170, 2604, 3119, 3255, 3720, 4340, 5208, 6238, 6510, 8680, 9357, 12476, 13020, 15595, 18714, 21833, 24952, 26040, 31190, 37428, 43666, 46785, 62380, 65499, 74856, 87332, 93570, 96689, 109165, 124760, 130998, 174664, 187140, 193378, 218330, 261996, 290067, 327495, 374280, 386756, 436660, 483445, 523992, 580134, 654990, 676823, 773512, 873320, 966890, 1160268, 1309980, 1353646, 1450335, 1933780, 2030469, 2320536, 2619960, 2707292, 2900670, 3384115, 3867560, 4060938, 5414584, 5801340, 6768230, 8121876, 10152345, 11602680, 13536460, 16243752, 20304690, 27072920, 40609380, 81218760]

約数ペア:

[(1, 81218760), (2, 40609380), (3, 27072920), (4, 20304690), (5, 16243752), (6, 13536460), (7, 11602680), (8, 10152345), (10, 8121876), (12, 6768230), (14, 5801340), (15, 5414584), (20, 4060938), (21, 3867560), (24, 3384115), (28, 2900670), (30, 2707292), (31, 2619960), (35, 2320536), (40, 2030469), (42, 1933780), (56, 1450335), (60, 1353646), (62, 1309980), (70, 1160268), (84, 966890), (93, 873320), (105, 773512), (120, 676823), (124, 654990), (140, 580134), (155, 523992), (168, 483445), (186, 436660), (210, 386756), (217, 374280), (248, 327495), (280, 290067), (310, 261996), (372, 218330), (420, 193378), (434, 187140), (465, 174664), (620, 130998), (651, 124760), (744, 109165), (840, 96689), (868, 93570), (930, 87332), (1085, 74856), (1240, 65499), (1302, 62380), (1736, 46785), (1860, 43666), (2170, 37428), (2604, 31190), (3119, 26040), (3255, 24952), (3720, 21833), (4340, 18714), (5208, 15595), (6238, 13020), (6510, 12476), (8680, 9357)]