68643640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1307}}^1$

素因数の和:1432

約数の個数: 64

約数和(自身を含む): 168104160

約数和(自身を除く): 99460520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 404, 505, 520, 808, 1010, 1307, 1313, 2020, 2614, 2626, 4040, 5228, 5252, 6535, 6565, 10456, 10504, 13070, 13130, 16991, 26140, 26260, 33982, 52280, 52520, 67964, 84955, 132007, 135928, 169910, 264014, 339820, 528028, 660035, 679640, 1056056, 1320070, 1716091, 2640140, 3432182, 5280280, 6864364, 8580455, 13728728, 17160910, 34321820, 68643640]

約数ペア:

[(1, 68643640), (2, 34321820), (4, 17160910), (5, 13728728), (8, 8580455), (10, 6864364), (13, 5280280), (20, 3432182), (26, 2640140), (40, 1716091), (52, 1320070), (65, 1056056), (101, 679640), (104, 660035), (130, 528028), (202, 339820), (260, 264014), (404, 169910), (505, 135928), (520, 132007), (808, 84955), (1010, 67964), (1307, 52520), (1313, 52280), (2020, 33982), (2614, 26260), (2626, 26140), (4040, 16991), (5228, 13130), (5252, 13070), (6535, 10504), (6565, 10456)]