21781704

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{409}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 62582400

約数和(自身を除く): 40800696

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 317, 409, 634, 818, 951, 1227, 1268, 1636, 1902, 2219, 2454, 2536, 2863, 3272, 3804, 4438, 4908, 5726, 6657, 7608, 8589, 8876, 9816, 11452, 13314, 17178, 17752, 22904, 26628, 34356, 53256, 68712, 129653, 259306, 388959, 518612, 777918, 907571, 1037224, 1555836, 1815142, 2722713, 3111672, 3630284, 5445426, 7260568, 10890852, 21781704]

約数ペア:

[(1, 21781704), (2, 10890852), (3, 7260568), (4, 5445426), (6, 3630284), (7, 3111672), (8, 2722713), (12, 1815142), (14, 1555836), (21, 1037224), (24, 907571), (28, 777918), (42, 518612), (56, 388959), (84, 259306), (168, 129653), (317, 68712), (409, 53256), (634, 34356), (818, 26628), (951, 22904), (1227, 17752), (1268, 17178), (1636, 13314), (1902, 11452), (2219, 9816), (2454, 8876), (2536, 8589), (2863, 7608), (3272, 6657), (3804, 5726), (4438, 4908)]