21203286

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 48771072

約数和(自身を除く): 27567786

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 53, 69, 78, 106, 138, 159, 223, 299, 318, 446, 598, 669, 689, 897, 1219, 1338, 1378, 1794, 2067, 2438, 2899, 3657, 4134, 5129, 5798, 7314, 8697, 10258, 11819, 15387, 15847, 17394, 23638, 30774, 31694, 35457, 47541, 66677, 70914, 95082, 133354, 153647, 200031, 271837, 307294, 400062, 460941, 543674, 815511, 921882, 1631022, 3533881, 7067762, 10601643, 21203286]

約数ペア:

[(1, 21203286), (2, 10601643), (3, 7067762), (6, 3533881), (13, 1631022), (23, 921882), (26, 815511), (39, 543674), (46, 460941), (53, 400062), (69, 307294), (78, 271837), (106, 200031), (138, 153647), (159, 133354), (223, 95082), (299, 70914), (318, 66677), (446, 47541), (598, 35457), (669, 31694), (689, 30774), (897, 23638), (1219, 17394), (1338, 15847), (1378, 15387), (1794, 11819), (2067, 10258), (2438, 8697), (2899, 7314), (3657, 5798), (4134, 5129)]