21578414

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^3$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 40442640

約数和(自身を除く): 18864226

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 121, 143, 209, 242, 247, 286, 361, 418, 494, 722, 1573, 2299, 2717, 3146, 3971, 4598, 4693, 5434, 6859, 7942, 9386, 13718, 29887, 43681, 51623, 59774, 75449, 87362, 89167, 103246, 150898, 178334, 567853, 829939, 980837, 1135706, 1659878, 1961674, 10789207, 21578414]

約数ペア:

[(1, 21578414), (2, 10789207), (11, 1961674), (13, 1659878), (19, 1135706), (22, 980837), (26, 829939), (38, 567853), (121, 178334), (143, 150898), (209, 103246), (242, 89167), (247, 87362), (286, 75449), (361, 59774), (418, 51623), (494, 43681), (722, 29887), (1573, 13718), (2299, 9386), (2717, 7942), (3146, 6859), (3971, 5434), (4598, 4693)]