80688580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{3671}}^1$

素因数の和:3844

約数の個数: 48

約数和(自身を含む): 194939136

約数和(自身を除く): 114250556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 3671, 4396, 5495, 7342, 10990, 14684, 18355, 21980, 25697, 36710, 51394, 73420, 102788, 128485, 256970, 513940, 576347, 1152694, 2305388, 2881735, 4034429, 5763470, 8068858, 11526940, 16137716, 20172145, 40344290, 80688580]

約数ペア:

[(1, 80688580), (2, 40344290), (4, 20172145), (5, 16137716), (7, 11526940), (10, 8068858), (14, 5763470), (20, 4034429), (28, 2881735), (35, 2305388), (70, 1152694), (140, 576347), (157, 513940), (314, 256970), (628, 128485), (785, 102788), (1099, 73420), (1570, 51394), (2198, 36710), (3140, 25697), (3671, 21980), (4396, 18355), (5495, 14684), (7342, 10990)]