21084885

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17328555

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 107, 145, 151, 261, 321, 435, 453, 535, 755, 963, 1305, 1359, 1605, 2265, 3103, 4379, 4815, 6795, 9309, 13137, 15515, 16157, 21895, 27927, 39411, 46545, 48471, 65685, 80785, 139635, 145413, 197055, 242355, 468553, 727065, 1405659, 2342765, 4216977, 7028295, 21084885]

約数ペア:

[(1, 21084885), (3, 7028295), (5, 4216977), (9, 2342765), (15, 1405659), (29, 727065), (45, 468553), (87, 242355), (107, 197055), (145, 145413), (151, 139635), (261, 80785), (321, 65685), (435, 48471), (453, 46545), (535, 39411), (755, 27927), (963, 21895), (1305, 16157), (1359, 15515), (1605, 13137), (2265, 9309), (3103, 6795), (4379, 4815)]