18977940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1787}}^1$

素因数の和:1861

約数の個数: 72

約数和(自身を含む): 58574880

約数和(自身を除く): 39596940

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, 1787, 2124, 2655, 3540, 3574, 5310, 5361, 7148, 8935, 10620, 10722, 16083, 17870, 21444, 26805, 32166, 35740, 53610, 64332, 80415, 105433, 107220, 160830, 210866, 316299, 321660, 421732, 527165, 632598, 948897, 1054330, 1265196, 1581495, 1897794, 2108660, 3162990, 3795588, 4744485, 6325980, 9488970, 18977940]

約数ペア:

[(1, 18977940), (2, 9488970), (3, 6325980), (4, 4744485), (5, 3795588), (6, 3162990), (9, 2108660), (10, 1897794), (12, 1581495), (15, 1265196), (18, 1054330), (20, 948897), (30, 632598), (36, 527165), (45, 421732), (59, 321660), (60, 316299), (90, 210866), (118, 160830), (177, 107220), (180, 105433), (236, 80415), (295, 64332), (354, 53610), (531, 35740), (590, 32166), (708, 26805), (885, 21444), (1062, 17870), (1180, 16083), (1770, 10722), (1787, 10620), (2124, 8935), (2655, 7148), (3540, 5361), (3574, 5310)]