31453020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{887}}^1$

素因数の和:1099

約数の個数: 72

約数和(自身を含む): 95999904

約数和(自身を除く): 64546884

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 887, 985, 1182, 1773, 1774, 1970, 2364, 2661, 2955, 3546, 3548, 3940, 4435, 5322, 5910, 7092, 7983, 8865, 8870, 10644, 11820, 13305, 15966, 17730, 17740, 26610, 31932, 35460, 39915, 53220, 79830, 159660, 174739, 349478, 524217, 698956, 873695, 1048434, 1572651, 1747390, 2096868, 2621085, 3145302, 3494780, 5242170, 6290604, 7863255, 10484340, 15726510, 31453020]

約数ペア:

[(1, 31453020), (2, 15726510), (3, 10484340), (4, 7863255), (5, 6290604), (6, 5242170), (9, 3494780), (10, 3145302), (12, 2621085), (15, 2096868), (18, 1747390), (20, 1572651), (30, 1048434), (36, 873695), (45, 698956), (60, 524217), (90, 349478), (180, 174739), (197, 159660), (394, 79830), (591, 53220), (788, 39915), (887, 35460), (985, 31932), (1182, 26610), (1773, 17740), (1774, 17730), (1970, 15966), (2364, 13305), (2661, 11820), (2955, 10644), (3546, 8870), (3548, 8865), (3940, 7983), (4435, 7092), (5322, 5910)]