21849568

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{991}}^1$

素因数の和:1067

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 25397408

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 104, 106, 208, 212, 416, 424, 689, 848, 991, 1378, 1696, 1982, 2756, 3964, 5512, 7928, 11024, 12883, 15856, 22048, 25766, 31712, 51532, 52523, 103064, 105046, 206128, 210092, 412256, 420184, 682799, 840368, 1365598, 1680736, 2731196, 5462392, 10924784, 21849568]

約数ペア:

[(1, 21849568), (2, 10924784), (4, 5462392), (8, 2731196), (13, 1680736), (16, 1365598), (26, 840368), (32, 682799), (52, 420184), (53, 412256), (104, 210092), (106, 206128), (208, 105046), (212, 103064), (416, 52523), (424, 51532), (689, 31712), (848, 25766), (991, 22048), (1378, 15856), (1696, 12883), (1982, 11024), (2756, 7928), (3964, 5512)]