2187405

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:519

約数の個数: 40

約数和(自身を含む): 4286304

約数和(自身を除く): 2098899

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 491, 495, 891, 1473, 1485, 2455, 4419, 4455, 5401, 7365, 13257, 16203, 22095, 27005, 39771, 48609, 66285, 81015, 145827, 198855, 243045, 437481, 729135, 2187405]

約数ペア:

[(1, 2187405), (3, 729135), (5, 437481), (9, 243045), (11, 198855), (15, 145827), (27, 81015), (33, 66285), (45, 48609), (55, 39771), (81, 27005), (99, 22095), (135, 16203), (165, 13257), (297, 7365), (405, 5401), (491, 4455), (495, 4419), (891, 2455), (1473, 1485)]