21000421430

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{271}}^1\times {\mathrm{79889}}^1$

素因数の和:80264

約数の個数: 32

約数和(自身を含む): 38331861120

約数和(自身を除く): 17331439690

約数列:

[1, 2, 5, 10, 97, 194, 271, 485, 542, 970, 1355, 2710, 26287, 52574, 79889, 131435, 159778, 262870, 399445, 798890, 7749233, 15498466, 21649919, 38746165, 43299838, 77492330, 108249595, 216499190, 2100042143, 4200084286, 10500210715, 21000421430]

約数ペア:

[(1, 21000421430), (2, 10500210715), (5, 4200084286), (10, 2100042143), (97, 216499190), (194, 108249595), (271, 77492330), (485, 43299838), (542, 38746165), (970, 21649919), (1355, 15498466), (2710, 7749233), (26287, 798890), (52574, 399445), (79889, 262870), (131435, 159778)]