18860985

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1015

約数の個数: 64

約数和(自身を含む): 39432960

約数和(自身を除く): 20571975

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 977, 1287, 1485, 1755, 2145, 2931, 3861, 4885, 6435, 8793, 10747, 12701, 14655, 19305, 26379, 32241, 38103, 43965, 53735, 63505, 96723, 114309, 131895, 139711, 161205, 190515, 290169, 342927, 419133, 483615, 571545, 698555, 1257399, 1450845, 1714635, 2095665, 3772197, 6286995, 18860985]

約数ペア:

[(1, 18860985), (3, 6286995), (5, 3772197), (9, 2095665), (11, 1714635), (13, 1450845), (15, 1257399), (27, 698555), (33, 571545), (39, 483615), (45, 419133), (55, 342927), (65, 290169), (99, 190515), (117, 161205), (135, 139711), (143, 131895), (165, 114309), (195, 96723), (297, 63505), (351, 53735), (429, 43965), (495, 38103), (585, 32241), (715, 26379), (977, 19305), (1287, 14655), (1485, 12701), (1755, 10747), (2145, 8793), (2931, 6435), (3861, 4885)]