21290528

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5591}}^1$

素因数の和:5625

約数の個数: 48

約数和(自身を含む): 50730624

約数和(自身を除く): 29440096

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5591, 11182, 22364, 39137, 44728, 78274, 89456, 95047, 156548, 178912, 190094, 313096, 380188, 626192, 665329, 760376, 1252384, 1330658, 1520752, 2661316, 3041504, 5322632, 10645264, 21290528]

約数ペア:

[(1, 21290528), (2, 10645264), (4, 5322632), (7, 3041504), (8, 2661316), (14, 1520752), (16, 1330658), (17, 1252384), (28, 760376), (32, 665329), (34, 626192), (56, 380188), (68, 313096), (112, 190094), (119, 178912), (136, 156548), (224, 95047), (238, 89456), (272, 78274), (476, 44728), (544, 39137), (952, 22364), (1904, 11182), (3808, 5591)]