21167390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1553}}^1$

素因数の和:1636

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19112290

約数列:

[1, 2, 5, 10, 29, 47, 58, 94, 145, 235, 290, 470, 1363, 1553, 2726, 3106, 6815, 7765, 13630, 15530, 45037, 72991, 90074, 145982, 225185, 364955, 450370, 729910, 2116739, 4233478, 10583695, 21167390]

約数ペア:

[(1, 21167390), (2, 10583695), (5, 4233478), (10, 2116739), (29, 729910), (47, 450370), (58, 364955), (94, 225185), (145, 145982), (235, 90074), (290, 72991), (470, 45037), (1363, 15530), (1553, 13630), (2726, 7765), (3106, 6815)]