21220380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13099}}^1$

素因数の和:13120

約数の個数: 60

約数和(自身を含む): 66574200

約数和(自身を除く): 45353820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 13099, 26198, 39297, 52396, 65495, 78594, 117891, 130990, 157188, 196485, 235782, 261980, 353673, 392970, 471564, 589455, 707346, 785940, 1061019, 1178910, 1414692, 1768365, 2122038, 2357820, 3536730, 4244076, 5305095, 7073460, 10610190, 21220380]

約数ペア:

[(1, 21220380), (2, 10610190), (3, 7073460), (4, 5305095), (5, 4244076), (6, 3536730), (9, 2357820), (10, 2122038), (12, 1768365), (15, 1414692), (18, 1178910), (20, 1061019), (27, 785940), (30, 707346), (36, 589455), (45, 471564), (54, 392970), (60, 353673), (81, 261980), (90, 235782), (108, 196485), (135, 157188), (162, 130990), (180, 117891), (270, 78594), (324, 65495), (405, 52396), (540, 39297), (810, 26198), (1620, 13099)]