781601440

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:530

約数の個数: 96

約数和(自身を含む): 1879781904

約数和(自身を除く): 1098180464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 181, 197, 274, 362, 394, 548, 685, 724, 788, 905, 985, 1096, 1370, 1448, 1576, 1810, 1970, 2192, 2740, 2896, 3152, 3620, 3940, 4384, 5480, 5792, 6304, 7240, 7880, 10960, 14480, 15760, 21920, 24797, 26989, 28960, 31520, 35657, 49594, 53978, 71314, 99188, 107956, 123985, 134945, 142628, 178285, 198376, 215912, 247970, 269890, 285256, 356570, 396752, 431824, 495940, 539780, 570512, 713140, 793504, 863648, 991880, 1079560, 1141024, 1426280, 1983760, 2159120, 2852560, 3967520, 4318240, 4885009, 5705120, 9770018, 19540036, 24425045, 39080072, 48850090, 78160144, 97700180, 156320288, 195400360, 390800720, 781601440]

約数ペア:

[(1, 781601440), (2, 390800720), (4, 195400360), (5, 156320288), (8, 97700180), (10, 78160144), (16, 48850090), (20, 39080072), (32, 24425045), (40, 19540036), (80, 9770018), (137, 5705120), (160, 4885009), (181, 4318240), (197, 3967520), (274, 2852560), (362, 2159120), (394, 1983760), (548, 1426280), (685, 1141024), (724, 1079560), (788, 991880), (905, 863648), (985, 793504), (1096, 713140), (1370, 570512), (1448, 539780), (1576, 495940), (1810, 431824), (1970, 396752), (2192, 356570), (2740, 285256), (2896, 269890), (3152, 247970), (3620, 215912), (3940, 198376), (4384, 178285), (5480, 142628), (5792, 134945), (6304, 123985), (7240, 107956), (7880, 99188), (10960, 71314), (14480, 53978), (15760, 49594), (21920, 35657), (24797, 31520), (26989, 28960)]