81838510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1949}}^1$

素因数の和:2005

約数の個数: 64

約数和(自身を含む): 176904000

約数和(自身を除く): 95065490

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 494, 646, 1105, 1235, 1615, 1949, 2210, 2470, 3230, 3898, 4199, 8398, 9745, 19490, 20995, 25337, 33133, 37031, 41990, 50674, 66266, 74062, 126685, 165665, 185155, 253370, 331330, 370310, 430729, 481403, 629527, 861458, 962806, 1259054, 2153645, 2407015, 3147635, 4307290, 4814030, 6295270, 8183851, 16367702, 40919255, 81838510]

約数ペア:

[(1, 81838510), (2, 40919255), (5, 16367702), (10, 8183851), (13, 6295270), (17, 4814030), (19, 4307290), (26, 3147635), (34, 2407015), (38, 2153645), (65, 1259054), (85, 962806), (95, 861458), (130, 629527), (170, 481403), (190, 430729), (221, 370310), (247, 331330), (323, 253370), (442, 185155), (494, 165665), (646, 126685), (1105, 74062), (1235, 66266), (1615, 50674), (1949, 41990), (2210, 37031), (2470, 33133), (3230, 25337), (3898, 20995), (4199, 19490), (8398, 9745)]