21231540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10723}}^1$

素因数の和:10749

約数の個数: 72

約数和(自身を含む): 70263648

約数和(自身を除く): 49032108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10723, 21446, 32169, 42892, 53615, 64338, 96507, 107230, 117953, 128676, 160845, 193014, 214460, 235906, 321690, 353859, 386028, 471812, 482535, 589765, 643380, 707718, 965070, 1061577, 1179530, 1415436, 1769295, 1930140, 2123154, 2359060, 3538590, 4246308, 5307885, 7077180, 10615770, 21231540]

約数ペア:

[(1, 21231540), (2, 10615770), (3, 7077180), (4, 5307885), (5, 4246308), (6, 3538590), (9, 2359060), (10, 2123154), (11, 1930140), (12, 1769295), (15, 1415436), (18, 1179530), (20, 1061577), (22, 965070), (30, 707718), (33, 643380), (36, 589765), (44, 482535), (45, 471812), (55, 386028), (60, 353859), (66, 321690), (90, 235906), (99, 214460), (110, 193014), (132, 160845), (165, 128676), (180, 117953), (198, 107230), (220, 96507), (330, 64338), (396, 53615), (495, 42892), (660, 32169), (990, 21446), (1980, 10723)]