21991306792

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{237857}}^1$

素因数の和:238010

約数の個数: 64

約数和(自身を含む): 51148984320

約数和(自身を除く): 29157677528

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 127, 182, 254, 364, 508, 728, 889, 1016, 1651, 1778, 3302, 3556, 6604, 7112, 11557, 13208, 23114, 46228, 92456, 237857, 475714, 951428, 1664999, 1902856, 3092141, 3329998, 6184282, 6659996, 12368564, 13319992, 21644987, 24737128, 30207839, 43289974, 60415678, 86579948, 120831356, 173159896, 211454873, 241662712, 392701907, 422909746, 785403814, 845819492, 1570807628, 1691638984, 2748913349, 3141615256, 5497826698, 10995653396, 21991306792]

約数ペア:

[(1, 21991306792), (2, 10995653396), (4, 5497826698), (7, 3141615256), (8, 2748913349), (13, 1691638984), (14, 1570807628), (26, 845819492), (28, 785403814), (52, 422909746), (56, 392701907), (91, 241662712), (104, 211454873), (127, 173159896), (182, 120831356), (254, 86579948), (364, 60415678), (508, 43289974), (728, 30207839), (889, 24737128), (1016, 21644987), (1651, 13319992), (1778, 12368564), (3302, 6659996), (3556, 6184282), (6604, 3329998), (7112, 3092141), (11557, 1902856), (13208, 1664999), (23114, 951428), (46228, 475714), (92456, 237857)]