21531902

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1327}}^1$

素因数の和:1416

約数の個数: 32

約数和(自身を含む): 39521280

約数和(自身を除く): 17989378

約数列:

[1, 2, 7, 14, 19, 38, 61, 122, 133, 266, 427, 854, 1159, 1327, 2318, 2654, 8113, 9289, 16226, 18578, 25213, 50426, 80947, 161894, 176491, 352982, 566629, 1133258, 1537993, 3075986, 10765951, 21531902]

約数ペア:

[(1, 21531902), (2, 10765951), (7, 3075986), (14, 1537993), (19, 1133258), (38, 566629), (61, 352982), (122, 176491), (133, 161894), (266, 80947), (427, 50426), (854, 25213), (1159, 18578), (1327, 16226), (2318, 9289), (2654, 8113)]