21821025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{15313}}^1$

素因数の和:15345

約数の個数: 24

約数和(自身を含む): 37978720

約数和(自身を除く): 16157695

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 15313, 45939, 76565, 229695, 290947, 382825, 872841, 1148475, 1454735, 4364205, 7273675, 21821025]

約数ペア:

[(1, 21821025), (3, 7273675), (5, 4364205), (15, 1454735), (19, 1148475), (25, 872841), (57, 382825), (75, 290947), (95, 229695), (285, 76565), (475, 45939), (1425, 15313)]