19693648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1297}}^1$

素因数の和:1391

約数の個数: 40

約数和(自身を含む): 41686568

約数和(自身を除く): 21992920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1297, 1898, 2594, 3796, 5188, 7592, 10376, 15184, 16861, 20752, 33722, 67444, 94681, 134888, 189362, 269776, 378724, 757448, 1230853, 1514896, 2461706, 4923412, 9846824, 19693648]

約数ペア:

[(1, 19693648), (2, 9846824), (4, 4923412), (8, 2461706), (13, 1514896), (16, 1230853), (26, 757448), (52, 378724), (73, 269776), (104, 189362), (146, 134888), (208, 94681), (292, 67444), (584, 33722), (949, 20752), (1168, 16861), (1297, 15184), (1898, 10376), (2594, 7592), (3796, 5188)]