278071780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{3089}}^1$

素因数の和:3748

約数の個数: 48

約数和(自身を含む): 668626560

約数和(自身を除く): 390554780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 643, 1286, 2572, 3089, 3215, 4501, 6178, 6430, 9002, 12356, 12860, 15445, 18004, 21623, 22505, 30890, 43246, 45010, 61780, 86492, 90020, 108115, 216230, 432460, 1986227, 3972454, 7944908, 9931135, 13903589, 19862270, 27807178, 39724540, 55614356, 69517945, 139035890, 278071780]

約数ペア:

[(1, 278071780), (2, 139035890), (4, 69517945), (5, 55614356), (7, 39724540), (10, 27807178), (14, 19862270), (20, 13903589), (28, 9931135), (35, 7944908), (70, 3972454), (140, 1986227), (643, 432460), (1286, 216230), (2572, 108115), (3089, 90020), (3215, 86492), (4501, 61780), (6178, 45010), (6430, 43246), (9002, 30890), (12356, 22505), (12860, 21623), (15445, 18004)]