21047688

素因数分解:

$2^3\times 3^8\times {\mathrm{401}}^1$

素因数の和:431

約数の個数: 72

約数和(自身を含む): 59341230

約数和(自身を除く): 38293542

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 401, 486, 648, 729, 802, 972, 1203, 1458, 1604, 1944, 2187, 2406, 2916, 3208, 3609, 4374, 4812, 5832, 6561, 7218, 8748, 9624, 10827, 13122, 14436, 17496, 21654, 26244, 28872, 32481, 43308, 52488, 64962, 86616, 97443, 129924, 194886, 259848, 292329, 389772, 584658, 779544, 876987, 1169316, 1753974, 2338632, 2630961, 3507948, 5261922, 7015896, 10523844, 21047688]

約数ペア:

[(1, 21047688), (2, 10523844), (3, 7015896), (4, 5261922), (6, 3507948), (8, 2630961), (9, 2338632), (12, 1753974), (18, 1169316), (24, 876987), (27, 779544), (36, 584658), (54, 389772), (72, 292329), (81, 259848), (108, 194886), (162, 129924), (216, 97443), (243, 86616), (324, 64962), (401, 52488), (486, 43308), (648, 32481), (729, 28872), (802, 26244), (972, 21654), (1203, 17496), (1458, 14436), (1604, 13122), (1944, 10827), (2187, 9624), (2406, 8748), (2916, 7218), (3208, 6561), (3609, 5832), (4374, 4812)]