18828315

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:465

約数の個数: 64

約数和(自身を含む): 37785600

約数和(自身を除く): 18957285

約数列:

[1, 3, 5, 9, 11, 15, 27, 31, 33, 45, 55, 93, 99, 135, 155, 165, 279, 297, 341, 409, 465, 495, 837, 1023, 1227, 1395, 1485, 1705, 2045, 3069, 3681, 4185, 4499, 5115, 6135, 9207, 11043, 12679, 13497, 15345, 18405, 22495, 38037, 40491, 46035, 55215, 63395, 67485, 114111, 121473, 139469, 190185, 202455, 342333, 418407, 570555, 607365, 697345, 1255221, 1711665, 2092035, 3765663, 6276105, 18828315]

約数ペア:

[(1, 18828315), (3, 6276105), (5, 3765663), (9, 2092035), (11, 1711665), (15, 1255221), (27, 697345), (31, 607365), (33, 570555), (45, 418407), (55, 342333), (93, 202455), (99, 190185), (135, 139469), (155, 121473), (165, 114111), (279, 67485), (297, 63395), (341, 55215), (409, 46035), (465, 40491), (495, 38037), (837, 22495), (1023, 18405), (1227, 15345), (1395, 13497), (1485, 12679), (1705, 11043), (2045, 9207), (3069, 6135), (3681, 5115), (4185, 4499)]