21708524

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:338

約数の個数: 36

約数和(自身を含む): 41002920

約数和(自身を除く): 19294396

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 211, 289, 356, 422, 578, 844, 1156, 1513, 3026, 3587, 6052, 7174, 14348, 18779, 25721, 37558, 51442, 60979, 75116, 102884, 121958, 243916, 319243, 638486, 1276972, 5427131, 10854262, 21708524]

約数ペア:

[(1, 21708524), (2, 10854262), (4, 5427131), (17, 1276972), (34, 638486), (68, 319243), (89, 243916), (178, 121958), (211, 102884), (289, 75116), (356, 60979), (422, 51442), (578, 37558), (844, 25721), (1156, 18779), (1513, 14348), (3026, 7174), (3587, 6052)]