20172959860

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{126223}}^1$

素因数の和:126424

約数の個数: 48

約数和(自身を含む): 43386723072

約数和(自身を除く): 23213763212

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 131, 244, 262, 305, 524, 610, 655, 1220, 1310, 2620, 7991, 15982, 31964, 39955, 79910, 126223, 159820, 252446, 504892, 631115, 1262230, 2524460, 7699603, 15399206, 16535213, 30798412, 33070426, 38498015, 66140852, 76996030, 82676065, 153992060, 165352130, 330704260, 1008647993, 2017295986, 4034591972, 5043239965, 10086479930, 20172959860]

約数ペア:

[(1, 20172959860), (2, 10086479930), (4, 5043239965), (5, 4034591972), (10, 2017295986), (20, 1008647993), (61, 330704260), (122, 165352130), (131, 153992060), (244, 82676065), (262, 76996030), (305, 66140852), (524, 38498015), (610, 33070426), (655, 30798412), (1220, 16535213), (1310, 15399206), (2620, 7699603), (7991, 2524460), (15982, 1262230), (31964, 631115), (39955, 504892), (79910, 252446), (126223, 159820)]