19899248

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:665

約数の個数: 40

約数和(自身を含む): 41180400

約数和(自身を除く): 21281152

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 149, 272, 298, 491, 596, 982, 1192, 1964, 2384, 2533, 3928, 5066, 7856, 8347, 10132, 16694, 20264, 33388, 40528, 66776, 73159, 133552, 146318, 292636, 585272, 1170544, 1243703, 2487406, 4974812, 9949624, 19899248]

約数ペア:

[(1, 19899248), (2, 9949624), (4, 4974812), (8, 2487406), (16, 1243703), (17, 1170544), (34, 585272), (68, 292636), (136, 146318), (149, 133552), (272, 73159), (298, 66776), (491, 40528), (596, 33388), (982, 20264), (1192, 16694), (1964, 10132), (2384, 8347), (2533, 7856), (3928, 5066)]