20792316520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{65147}}^1$

素因数の和:65338

約数の個数: 64

約数和(自身を含む): 47844691200

約数和(自身を除く): 27052374680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 101, 158, 202, 316, 395, 404, 505, 632, 790, 808, 1010, 1580, 2020, 3160, 4040, 7979, 15958, 31916, 39895, 63832, 65147, 79790, 130294, 159580, 260588, 319160, 325735, 521176, 651470, 1302940, 2605880, 5146613, 6579847, 10293226, 13159694, 20586452, 25733065, 26319388, 32899235, 41172904, 51466130, 52638776, 65798470, 102932260, 131596940, 205864520, 263193880, 519807913, 1039615826, 2079231652, 2599039565, 4158463304, 5198079130, 10396158260, 20792316520]

約数ペア:

[(1, 20792316520), (2, 10396158260), (4, 5198079130), (5, 4158463304), (8, 2599039565), (10, 2079231652), (20, 1039615826), (40, 519807913), (79, 263193880), (101, 205864520), (158, 131596940), (202, 102932260), (316, 65798470), (395, 52638776), (404, 51466130), (505, 41172904), (632, 32899235), (790, 26319388), (808, 25733065), (1010, 20586452), (1580, 13159694), (2020, 10293226), (3160, 6579847), (4040, 5146613), (7979, 2605880), (15958, 1302940), (31916, 651470), (39895, 521176), (63832, 325735), (65147, 319160), (79790, 260588), (130294, 159580)]