18961965

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^2$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 37103040

約数和(自身を除く): 18141075

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 113, 135, 165, 297, 339, 495, 565, 1017, 1243, 1485, 1695, 3051, 3729, 5085, 6215, 11187, 12769, 15255, 18645, 33561, 38307, 55935, 63845, 114921, 140459, 167805, 191535, 344763, 421377, 574605, 702295, 1264131, 1723815, 2106885, 3792393, 6320655, 18961965]

約数ペア:

[(1, 18961965), (3, 6320655), (5, 3792393), (9, 2106885), (11, 1723815), (15, 1264131), (27, 702295), (33, 574605), (45, 421377), (55, 344763), (99, 191535), (113, 167805), (135, 140459), (165, 114921), (297, 63845), (339, 55935), (495, 38307), (565, 33561), (1017, 18645), (1243, 15255), (1485, 12769), (1695, 11187), (3051, 6215), (3729, 5085)]