18994780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 50512896

約数和(自身を除く): 31518116

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 23, 28, 34, 35, 46, 68, 70, 85, 92, 115, 119, 140, 161, 170, 230, 238, 322, 340, 347, 391, 460, 476, 595, 644, 694, 782, 805, 1190, 1388, 1564, 1610, 1735, 1955, 2380, 2429, 2737, 3220, 3470, 3910, 4858, 5474, 5899, 6940, 7820, 7981, 9716, 10948, 11798, 12145, 13685, 15962, 23596, 24290, 27370, 29495, 31924, 39905, 41293, 48580, 54740, 55867, 58990, 79810, 82586, 111734, 117980, 135677, 159620, 165172, 206465, 223468, 271354, 279335, 412930, 542708, 558670, 678385, 825860, 949739, 1117340, 1356770, 1899478, 2713540, 3798956, 4748695, 9497390, 18994780]

約数ペア:

[(1, 18994780), (2, 9497390), (4, 4748695), (5, 3798956), (7, 2713540), (10, 1899478), (14, 1356770), (17, 1117340), (20, 949739), (23, 825860), (28, 678385), (34, 558670), (35, 542708), (46, 412930), (68, 279335), (70, 271354), (85, 223468), (92, 206465), (115, 165172), (119, 159620), (140, 135677), (161, 117980), (170, 111734), (230, 82586), (238, 79810), (322, 58990), (340, 55867), (347, 54740), (391, 48580), (460, 41293), (476, 39905), (595, 31924), (644, 29495), (694, 27370), (782, 24290), (805, 23596), (1190, 15962), (1388, 13685), (1564, 12145), (1610, 11798), (1735, 10948), (1955, 9716), (2380, 7981), (2429, 7820), (2737, 6940), (3220, 5899), (3470, 5474), (3910, 4858)]