21756670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 43898400

約数和(自身を除く): 22141730

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 199, 290, 377, 398, 754, 841, 995, 1682, 1885, 1990, 2587, 3770, 4205, 5174, 5771, 8410, 10933, 11542, 12935, 21866, 25870, 28855, 54665, 57710, 75023, 109330, 150046, 167359, 334718, 375115, 750230, 836795, 1673590, 2175667, 4351334, 10878335, 21756670]

約数ペア:

[(1, 21756670), (2, 10878335), (5, 4351334), (10, 2175667), (13, 1673590), (26, 836795), (29, 750230), (58, 375115), (65, 334718), (130, 167359), (145, 150046), (199, 109330), (290, 75023), (377, 57710), (398, 54665), (754, 28855), (841, 25870), (995, 21866), (1682, 12935), (1885, 11542), (1990, 10933), (2587, 8410), (3770, 5771), (4205, 5174)]