21208928

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2999}}^1$

素因数の和:3039

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 26419072

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 2999, 3536, 5998, 7072, 11996, 23992, 38987, 47984, 50983, 77974, 95968, 101966, 155948, 203932, 311896, 407864, 623792, 662779, 815728, 1247584, 1325558, 1631456, 2651116, 5302232, 10604464, 21208928]

約数ペア:

[(1, 21208928), (2, 10604464), (4, 5302232), (8, 2651116), (13, 1631456), (16, 1325558), (17, 1247584), (26, 815728), (32, 662779), (34, 623792), (52, 407864), (68, 311896), (104, 203932), (136, 155948), (208, 101966), (221, 95968), (272, 77974), (416, 50983), (442, 47984), (544, 38987), (884, 23992), (1768, 11996), (2999, 7072), (3536, 5998)]