21817510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:134

約数の個数: 96

約数和(自身を含む): 49603680

約数和(自身を除く): 27786170

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 65, 73, 95, 110, 121, 130, 143, 146, 190, 209, 242, 247, 286, 365, 418, 494, 605, 715, 730, 803, 949, 1045, 1210, 1235, 1387, 1430, 1573, 1606, 1898, 2090, 2299, 2470, 2717, 2774, 3146, 4015, 4598, 4745, 5434, 6935, 7865, 8030, 8833, 9490, 10439, 11495, 13585, 13870, 15257, 15730, 17666, 18031, 20878, 22990, 27170, 29887, 30514, 36062, 44165, 52195, 59774, 76285, 88330, 90155, 104390, 114829, 149435, 152570, 167827, 180310, 198341, 229658, 298870, 335654, 396682, 574145, 839135, 991705, 1148290, 1678270, 1983410, 2181751, 4363502, 10908755, 21817510]

約数ペア:

[(1, 21817510), (2, 10908755), (5, 4363502), (10, 2181751), (11, 1983410), (13, 1678270), (19, 1148290), (22, 991705), (26, 839135), (38, 574145), (55, 396682), (65, 335654), (73, 298870), (95, 229658), (110, 198341), (121, 180310), (130, 167827), (143, 152570), (146, 149435), (190, 114829), (209, 104390), (242, 90155), (247, 88330), (286, 76285), (365, 59774), (418, 52195), (494, 44165), (605, 36062), (715, 30514), (730, 29887), (803, 27170), (949, 22990), (1045, 20878), (1210, 18031), (1235, 17666), (1387, 15730), (1430, 15257), (1573, 13870), (1606, 13585), (1898, 11495), (2090, 10439), (2299, 9490), (2470, 8833), (2717, 8030), (2774, 7865), (3146, 6935), (4015, 5434), (4598, 4745)]