21781046

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{173}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 41567904

約数和(自身を除く): 19786858

約数列:

[1, 2, 7, 14, 17, 23, 34, 46, 119, 161, 173, 238, 322, 346, 391, 529, 782, 1058, 1211, 2422, 2737, 2941, 3703, 3979, 5474, 5882, 7406, 7958, 8993, 17986, 20587, 27853, 41174, 55706, 62951, 67643, 91517, 125902, 135286, 183034, 473501, 640619, 947002, 1281238, 1555789, 3111578, 10890523, 21781046]

約数ペア:

[(1, 21781046), (2, 10890523), (7, 3111578), (14, 1555789), (17, 1281238), (23, 947002), (34, 640619), (46, 473501), (119, 183034), (161, 135286), (173, 125902), (238, 91517), (322, 67643), (346, 62951), (391, 55706), (529, 41174), (782, 27853), (1058, 20587), (1211, 17986), (2422, 8993), (2737, 7958), (2941, 7406), (3703, 5882), (3979, 5474)]