19989736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2633}}^1$

素因数の和:2725

約数の個数: 32

約数和(自身を含む): 40932360

約数和(自身を除く): 20942624

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2633, 3796, 5266, 7592, 10532, 21064, 34229, 68458, 136916, 192209, 273832, 384418, 768836, 1537672, 2498717, 4997434, 9994868, 19989736]

約数ペア:

[(1, 19989736), (2, 9994868), (4, 4997434), (8, 2498717), (13, 1537672), (26, 768836), (52, 384418), (73, 273832), (104, 192209), (146, 136916), (292, 68458), (584, 34229), (949, 21064), (1898, 10532), (2633, 7592), (3796, 5266)]