81376260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:426

約数の個数: 144

約数和(自身を含む): 268894080

約数和(自身を除く): 187517820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 89, 98, 105, 140, 147, 178, 196, 210, 245, 267, 294, 311, 356, 420, 445, 490, 534, 588, 622, 623, 735, 890, 933, 980, 1068, 1244, 1246, 1335, 1470, 1555, 1780, 1866, 1869, 2177, 2492, 2670, 2940, 3110, 3115, 3732, 3738, 4354, 4361, 4665, 5340, 6220, 6230, 6531, 7476, 8708, 8722, 9330, 9345, 10885, 12460, 13062, 13083, 15239, 17444, 18660, 18690, 21770, 21805, 26124, 26166, 27679, 30478, 32655, 37380, 43540, 43610, 45717, 52332, 55358, 60956, 65310, 65415, 76195, 83037, 87220, 91434, 110716, 130620, 130830, 138395, 152390, 166074, 182868, 193753, 228585, 261660, 276790, 304780, 332148, 387506, 415185, 457170, 553580, 581259, 775012, 830370, 914340, 968765, 1162518, 1356271, 1660740, 1937530, 2325036, 2712542, 2906295, 3875060, 4068813, 5425084, 5812590, 6781355, 8137626, 11625180, 13562710, 16275252, 20344065, 27125420, 40688130, 81376260]

約数ペア:

[(1, 81376260), (2, 40688130), (3, 27125420), (4, 20344065), (5, 16275252), (6, 13562710), (7, 11625180), (10, 8137626), (12, 6781355), (14, 5812590), (15, 5425084), (20, 4068813), (21, 3875060), (28, 2906295), (30, 2712542), (35, 2325036), (42, 1937530), (49, 1660740), (60, 1356271), (70, 1162518), (84, 968765), (89, 914340), (98, 830370), (105, 775012), (140, 581259), (147, 553580), (178, 457170), (196, 415185), (210, 387506), (245, 332148), (267, 304780), (294, 276790), (311, 261660), (356, 228585), (420, 193753), (445, 182868), (490, 166074), (534, 152390), (588, 138395), (622, 130830), (623, 130620), (735, 110716), (890, 91434), (933, 87220), (980, 83037), (1068, 76195), (1244, 65415), (1246, 65310), (1335, 60956), (1470, 55358), (1555, 52332), (1780, 45717), (1866, 43610), (1869, 43540), (2177, 37380), (2492, 32655), (2670, 30478), (2940, 27679), (3110, 26166), (3115, 26124), (3732, 21805), (3738, 21770), (4354, 18690), (4361, 18660), (4665, 17444), (5340, 15239), (6220, 13083), (6230, 13062), (6531, 12460), (7476, 10885), (8708, 9345), (8722, 9330)]