21030496

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{577}}^1$

素因数の和:671

約数の個数: 48

約数和(自身を含む): 44570736

約数和(自身を除く): 23540240

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 67, 68, 134, 136, 268, 272, 536, 544, 577, 1072, 1139, 1154, 2144, 2278, 2308, 4556, 4616, 9112, 9232, 9809, 18224, 18464, 19618, 36448, 38659, 39236, 77318, 78472, 154636, 156944, 309272, 313888, 618544, 657203, 1237088, 1314406, 2628812, 5257624, 10515248, 21030496]

約数ペア:

[(1, 21030496), (2, 10515248), (4, 5257624), (8, 2628812), (16, 1314406), (17, 1237088), (32, 657203), (34, 618544), (67, 313888), (68, 309272), (134, 156944), (136, 154636), (268, 78472), (272, 77318), (536, 39236), (544, 38659), (577, 36448), (1072, 19618), (1139, 18464), (1154, 18224), (2144, 9809), (2278, 9232), (2308, 9112), (4556, 4616)]