19914004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 20970476

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 79, 158, 187, 316, 337, 374, 674, 748, 869, 1343, 1348, 1738, 2686, 3476, 3707, 5372, 5729, 7414, 11458, 14773, 14828, 22916, 26623, 29546, 53246, 59092, 63019, 106492, 126038, 252076, 292853, 452591, 585706, 905182, 1171412, 1810364, 4978501, 9957002, 19914004]

約数ペア:

[(1, 19914004), (2, 9957002), (4, 4978501), (11, 1810364), (17, 1171412), (22, 905182), (34, 585706), (44, 452591), (68, 292853), (79, 252076), (158, 126038), (187, 106492), (316, 63019), (337, 59092), (374, 53246), (674, 29546), (748, 26623), (869, 22916), (1343, 14828), (1348, 14773), (1738, 11458), (2686, 7414), (3476, 5729), (3707, 5372)]