21777588

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1077

約数の個数: 72

約数和(自身を含む): 63685440

約数和(自身を除く): 41907852

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 89, 126, 178, 252, 267, 356, 534, 623, 801, 971, 1068, 1246, 1602, 1869, 1942, 2492, 2913, 3204, 3738, 3884, 5607, 5826, 6797, 7476, 8739, 11214, 11652, 13594, 17478, 20391, 22428, 27188, 34956, 40782, 61173, 81564, 86419, 122346, 172838, 244692, 259257, 345676, 518514, 604933, 777771, 1037028, 1209866, 1555542, 1814799, 2419732, 3111084, 3629598, 5444397, 7259196, 10888794, 21777588]

約数ペア:

[(1, 21777588), (2, 10888794), (3, 7259196), (4, 5444397), (6, 3629598), (7, 3111084), (9, 2419732), (12, 1814799), (14, 1555542), (18, 1209866), (21, 1037028), (28, 777771), (36, 604933), (42, 518514), (63, 345676), (84, 259257), (89, 244692), (126, 172838), (178, 122346), (252, 86419), (267, 81564), (356, 61173), (534, 40782), (623, 34956), (801, 27188), (971, 22428), (1068, 20391), (1246, 17478), (1602, 13594), (1869, 11652), (1942, 11214), (2492, 8739), (2913, 7476), (3204, 6797), (3738, 5826), (3884, 5607)]