21035138972

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{167}}^1\times {\mathrm{108961}}^1$

素因数の和:109166

約数の個数: 36

約数和(自身を含む): 39338768784

約数和(自身を除く): 18303629812

約数列:

[1, 2, 4, 17, 34, 68, 167, 289, 334, 578, 668, 1156, 2839, 5678, 11356, 48263, 96526, 108961, 193052, 217922, 435844, 1852337, 3704674, 7409348, 18196487, 31489729, 36392974, 62979458, 72785948, 125958916, 309340279, 618680558, 1237361116, 5258784743, 10517569486, 21035138972]

約数ペア:

[(1, 21035138972), (2, 10517569486), (4, 5258784743), (17, 1237361116), (34, 618680558), (68, 309340279), (167, 125958916), (289, 72785948), (334, 62979458), (578, 36392974), (668, 31489729), (1156, 18196487), (2839, 7409348), (5678, 3704674), (11356, 1852337), (48263, 435844), (96526, 217922), (108961, 193052)]