20821331632

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{389971}}^1$

素因数の和:390097

約数の個数: 40

約数和(自身を含む): 41780040192

約数和(自身を除く): 20958708560

約数列:

[1, 2, 4, 8, 16, 47, 71, 94, 142, 188, 284, 376, 568, 752, 1136, 3337, 6674, 13348, 26696, 53392, 389971, 779942, 1559884, 3119768, 6239536, 18328637, 27687941, 36657274, 55375882, 73314548, 110751764, 146629096, 221503528, 293258192, 443007056, 1301333227, 2602666454, 5205332908, 10410665816, 20821331632]

約数ペア:

[(1, 20821331632), (2, 10410665816), (4, 5205332908), (8, 2602666454), (16, 1301333227), (47, 443007056), (71, 293258192), (94, 221503528), (142, 146629096), (188, 110751764), (284, 73314548), (376, 55375882), (568, 36657274), (752, 27687941), (1136, 18328637), (3337, 6239536), (6674, 3119768), (13348, 1559884), (26696, 779942), (53392, 389971)]