18936825

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 33539520

約数和(自身を除く): 14602695

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 97, 137, 285, 291, 411, 475, 485, 685, 1425, 1455, 1843, 2055, 2425, 2603, 3425, 5529, 7275, 7809, 9215, 10275, 13015, 13289, 27645, 39045, 39867, 46075, 65075, 66445, 138225, 195225, 199335, 252491, 332225, 757473, 996675, 1262455, 3787365, 6312275, 18936825]

約数ペア:

[(1, 18936825), (3, 6312275), (5, 3787365), (15, 1262455), (19, 996675), (25, 757473), (57, 332225), (75, 252491), (95, 199335), (97, 195225), (137, 138225), (285, 66445), (291, 65075), (411, 46075), (475, 39867), (485, 39045), (685, 27645), (1425, 13289), (1455, 13015), (1843, 10275), (2055, 9215), (2425, 7809), (2603, 7275), (3425, 5529)]