81540720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1039}}^1$

素因数の和:1167

約数の個数: 120

約数和(自身を含む): 276619200

約数和(自身を除く): 195078480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 109, 120, 144, 180, 218, 240, 327, 360, 436, 545, 654, 720, 872, 981, 1039, 1090, 1308, 1635, 1744, 1962, 2078, 2180, 2616, 3117, 3270, 3924, 4156, 4360, 4905, 5195, 5232, 6234, 6540, 7848, 8312, 8720, 9351, 9810, 10390, 12468, 13080, 15585, 15696, 16624, 18702, 19620, 20780, 24936, 26160, 31170, 37404, 39240, 41560, 46755, 49872, 62340, 74808, 78480, 83120, 93510, 113251, 124680, 149616, 187020, 226502, 249360, 339753, 374040, 453004, 566255, 679506, 748080, 906008, 1019259, 1132510, 1359012, 1698765, 1812016, 2038518, 2265020, 2718024, 3397530, 4077036, 4530040, 5096295, 5436048, 6795060, 8154072, 9060080, 10192590, 13590120, 16308144, 20385180, 27180240, 40770360, 81540720]

約数ペア:

[(1, 81540720), (2, 40770360), (3, 27180240), (4, 20385180), (5, 16308144), (6, 13590120), (8, 10192590), (9, 9060080), (10, 8154072), (12, 6795060), (15, 5436048), (16, 5096295), (18, 4530040), (20, 4077036), (24, 3397530), (30, 2718024), (36, 2265020), (40, 2038518), (45, 1812016), (48, 1698765), (60, 1359012), (72, 1132510), (80, 1019259), (90, 906008), (109, 748080), (120, 679506), (144, 566255), (180, 453004), (218, 374040), (240, 339753), (327, 249360), (360, 226502), (436, 187020), (545, 149616), (654, 124680), (720, 113251), (872, 93510), (981, 83120), (1039, 78480), (1090, 74808), (1308, 62340), (1635, 49872), (1744, 46755), (1962, 41560), (2078, 39240), (2180, 37404), (2616, 31170), (3117, 26160), (3270, 24936), (3924, 20780), (4156, 19620), (4360, 18702), (4905, 16624), (5195, 15696), (5232, 15585), (6234, 13080), (6540, 12468), (7848, 10390), (8312, 9810), (8720, 9351)]