257873980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{141689}}^1$

素因数の和:141718

約数の個数: 48

約数和(自身を含む): 666509760

約数和(自身を除く): 408635780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 141689, 283378, 566756, 708445, 991823, 1416890, 1841957, 1983646, 2833780, 3683914, 3967292, 4959115, 7367828, 9209785, 9918230, 12893699, 18419570, 19836460, 25787398, 36839140, 51574796, 64468495, 128936990, 257873980]

約数ペア:

[(1, 257873980), (2, 128936990), (4, 64468495), (5, 51574796), (7, 36839140), (10, 25787398), (13, 19836460), (14, 18419570), (20, 12893699), (26, 9918230), (28, 9209785), (35, 7367828), (52, 4959115), (65, 3967292), (70, 3683914), (91, 2833780), (130, 1983646), (140, 1841957), (182, 1416890), (260, 991823), (364, 708445), (455, 566756), (910, 283378), (1820, 141689)]