81603655

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 126904320

約数和(自身を除く): 45300665

約数列:

[1, 5, 7, 17, 23, 35, 67, 85, 89, 115, 119, 161, 335, 391, 445, 469, 595, 623, 805, 1139, 1513, 1541, 1955, 2047, 2345, 2737, 3115, 5695, 5963, 7565, 7705, 7973, 10235, 10591, 10787, 13685, 14329, 26197, 29815, 34799, 39865, 41741, 52955, 53935, 71645, 101371, 130985, 137149, 173995, 183379, 208705, 243593, 506855, 685745, 709597, 916895, 960043, 1217965, 2331533, 3547985, 4800215, 11657665, 16320731, 81603655]

約数ペア:

[(1, 81603655), (5, 16320731), (7, 11657665), (17, 4800215), (23, 3547985), (35, 2331533), (67, 1217965), (85, 960043), (89, 916895), (115, 709597), (119, 685745), (161, 506855), (335, 243593), (391, 208705), (445, 183379), (469, 173995), (595, 137149), (623, 130985), (805, 101371), (1139, 71645), (1513, 53935), (1541, 52955), (1955, 41741), (2047, 39865), (2345, 34799), (2737, 29815), (3115, 26197), (5695, 14329), (5963, 13685), (7565, 10787), (7705, 10591), (7973, 10235)]