278532180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2341}}^1$

素因数の和:3017

約数の個数: 72

約数和(自身を含む): 846520584

約数和(自身を除く): 567988404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 661, 1322, 1983, 2341, 2644, 3305, 3966, 4682, 5949, 6610, 7023, 7932, 9364, 9915, 11705, 11898, 13220, 14046, 19830, 21069, 23410, 23796, 28092, 29745, 35115, 39660, 42138, 46820, 59490, 70230, 84276, 105345, 118980, 140460, 210690, 421380, 1547401, 3094802, 4642203, 6189604, 7737005, 9284406, 13926609, 15474010, 18568812, 23211015, 27853218, 30948020, 46422030, 55706436, 69633045, 92844060, 139266090, 278532180]

約数ペア:

[(1, 278532180), (2, 139266090), (3, 92844060), (4, 69633045), (5, 55706436), (6, 46422030), (9, 30948020), (10, 27853218), (12, 23211015), (15, 18568812), (18, 15474010), (20, 13926609), (30, 9284406), (36, 7737005), (45, 6189604), (60, 4642203), (90, 3094802), (180, 1547401), (661, 421380), (1322, 210690), (1983, 140460), (2341, 118980), (2644, 105345), (3305, 84276), (3966, 70230), (4682, 59490), (5949, 46820), (6610, 42138), (7023, 39660), (7932, 35115), (9364, 29745), (9915, 28092), (11705, 23796), (11898, 23410), (13220, 21069), (14046, 19830)]