80081680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:717

約数の個数: 120

約数和(自身を含む): 223914240

約数和(自身を除く): 143832560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 659, 784, 868, 980, 1085, 1240, 1318, 1519, 1736, 1960, 2170, 2480, 2636, 3038, 3295, 3472, 3920, 4340, 4613, 5272, 6076, 6590, 7595, 8680, 9226, 10544, 12152, 13180, 15190, 17360, 18452, 20429, 23065, 24304, 26360, 30380, 32291, 36904, 40858, 46130, 52720, 60760, 64582, 73808, 81716, 92260, 102145, 121520, 129164, 143003, 161455, 163432, 184520, 204290, 258328, 286006, 322910, 326864, 369040, 408580, 516656, 572012, 645820, 715015, 817160, 1001021, 1144024, 1291640, 1430030, 1634320, 2002042, 2288048, 2583280, 2860060, 4004084, 5005105, 5720120, 8008168, 10010210, 11440240, 16016336, 20020420, 40040840, 80081680]

約数ペア:

[(1, 80081680), (2, 40040840), (4, 20020420), (5, 16016336), (7, 11440240), (8, 10010210), (10, 8008168), (14, 5720120), (16, 5005105), (20, 4004084), (28, 2860060), (31, 2583280), (35, 2288048), (40, 2002042), (49, 1634320), (56, 1430030), (62, 1291640), (70, 1144024), (80, 1001021), (98, 817160), (112, 715015), (124, 645820), (140, 572012), (155, 516656), (196, 408580), (217, 369040), (245, 326864), (248, 322910), (280, 286006), (310, 258328), (392, 204290), (434, 184520), (490, 163432), (496, 161455), (560, 143003), (620, 129164), (659, 121520), (784, 102145), (868, 92260), (980, 81716), (1085, 73808), (1240, 64582), (1318, 60760), (1519, 52720), (1736, 46130), (1960, 40858), (2170, 36904), (2480, 32291), (2636, 30380), (3038, 26360), (3295, 24304), (3472, 23065), (3920, 20429), (4340, 18452), (4613, 17360), (5272, 15190), (6076, 13180), (6590, 12152), (7595, 10544), (8680, 9226)]