21429928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:107

約数の個数: 96

約数和(自身を含む): 49512960

約数和(自身を除く): 28083032

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 31, 34, 46, 52, 62, 68, 92, 104, 124, 136, 184, 221, 248, 289, 299, 391, 403, 442, 527, 578, 598, 713, 782, 806, 884, 1054, 1156, 1196, 1426, 1564, 1612, 1768, 2108, 2312, 2392, 2852, 3128, 3224, 3757, 4216, 5083, 5704, 6647, 6851, 7514, 8959, 9269, 10166, 12121, 13294, 13702, 15028, 17918, 18538, 20332, 24242, 26588, 27404, 30056, 35836, 37076, 40664, 48484, 53176, 54808, 71672, 74152, 86411, 96968, 116467, 157573, 172822, 206057, 232934, 315146, 345644, 412114, 465868, 630292, 691288, 824228, 931736, 1260584, 1648456, 2678741, 5357482, 10714964, 21429928]

約数ペア:

[(1, 21429928), (2, 10714964), (4, 5357482), (8, 2678741), (13, 1648456), (17, 1260584), (23, 931736), (26, 824228), (31, 691288), (34, 630292), (46, 465868), (52, 412114), (62, 345644), (68, 315146), (92, 232934), (104, 206057), (124, 172822), (136, 157573), (184, 116467), (221, 96968), (248, 86411), (289, 74152), (299, 71672), (391, 54808), (403, 53176), (442, 48484), (527, 40664), (578, 37076), (598, 35836), (713, 30056), (782, 27404), (806, 26588), (884, 24242), (1054, 20332), (1156, 18538), (1196, 17918), (1426, 15028), (1564, 13702), (1612, 13294), (1768, 12121), (2108, 10166), (2312, 9269), (2392, 8959), (2852, 7514), (3128, 6851), (3224, 6647), (3757, 5704), (4216, 5083)]