21356820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2011}}^1$

素因数の和:2085

約数の個数: 72

約数和(自身を含む): 65913120

約数和(自身を除く): 44556300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 2011, 2124, 2655, 3540, 4022, 5310, 6033, 8044, 10055, 10620, 12066, 18099, 20110, 24132, 30165, 36198, 40220, 60330, 72396, 90495, 118649, 120660, 180990, 237298, 355947, 361980, 474596, 593245, 711894, 1067841, 1186490, 1423788, 1779735, 2135682, 2372980, 3559470, 4271364, 5339205, 7118940, 10678410, 21356820]

約数ペア:

[(1, 21356820), (2, 10678410), (3, 7118940), (4, 5339205), (5, 4271364), (6, 3559470), (9, 2372980), (10, 2135682), (12, 1779735), (15, 1423788), (18, 1186490), (20, 1067841), (30, 711894), (36, 593245), (45, 474596), (59, 361980), (60, 355947), (90, 237298), (118, 180990), (177, 120660), (180, 118649), (236, 90495), (295, 72396), (354, 60330), (531, 40220), (590, 36198), (708, 30165), (885, 24132), (1062, 20110), (1180, 18099), (1770, 12066), (2011, 10620), (2124, 10055), (2655, 8044), (3540, 6033), (4022, 5310)]