21259658720

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{269519}}^1$

素因数の和:269580

約数の個数: 96

約数和(自身を含む): 55014422400

約数和(自身を除く): 33754763680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 68, 80, 85, 116, 136, 145, 160, 170, 232, 272, 290, 340, 464, 493, 544, 580, 680, 928, 986, 1160, 1360, 1972, 2320, 2465, 2720, 3944, 4640, 4930, 7888, 9860, 15776, 19720, 39440, 78880, 269519, 539038, 1078076, 1347595, 2156152, 2695190, 4312304, 4581823, 5390380, 7816051, 8624608, 9163646, 10780760, 15632102, 18327292, 21561520, 22909115, 31264204, 36654584, 39080255, 43123040, 45818230, 62528408, 73309168, 78160510, 91636460, 125056816, 132872867, 146618336, 156321020, 183272920, 250113632, 265745734, 312642040, 366545840, 531491468, 625284080, 664364335, 733091680, 1062982936, 1250568160, 1328728670, 2125965872, 2657457340, 4251931744, 5314914680, 10629829360, 21259658720]

約数ペア:

[(1, 21259658720), (2, 10629829360), (4, 5314914680), (5, 4251931744), (8, 2657457340), (10, 2125965872), (16, 1328728670), (17, 1250568160), (20, 1062982936), (29, 733091680), (32, 664364335), (34, 625284080), (40, 531491468), (58, 366545840), (68, 312642040), (80, 265745734), (85, 250113632), (116, 183272920), (136, 156321020), (145, 146618336), (160, 132872867), (170, 125056816), (232, 91636460), (272, 78160510), (290, 73309168), (340, 62528408), (464, 45818230), (493, 43123040), (544, 39080255), (580, 36654584), (680, 31264204), (928, 22909115), (986, 21561520), (1160, 18327292), (1360, 15632102), (1972, 10780760), (2320, 9163646), (2465, 8624608), (2720, 7816051), (3944, 5390380), (4640, 4581823), (4930, 4312304), (7888, 2695190), (9860, 2156152), (15776, 1347595), (19720, 1078076), (39440, 539038), (78880, 269519)]