21252448

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5581}}^1$

素因数の和:5615

約数の個数: 48

約数和(自身を含む): 50639904

約数和(自身を除く): 29387456

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, 5581, 11162, 22324, 39067, 44648, 78134, 89296, 94877, 156268, 178592, 189754, 312536, 379508, 625072, 664139, 759016, 1250144, 1328278, 1518032, 2656556, 3036064, 5313112, 10626224, 21252448]

約数ペア:

[(1, 21252448), (2, 10626224), (4, 5313112), (7, 3036064), (8, 2656556), (14, 1518032), (16, 1328278), (17, 1250144), (28, 759016), (32, 664139), (34, 625072), (56, 379508), (68, 312536), (112, 189754), (119, 178592), (136, 156268), (224, 94877), (238, 89296), (272, 78134), (476, 44648), (544, 39067), (952, 22324), (1904, 11162), (3808, 5581)]