18887220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9539}}^1$

素因数の和:9565

約数の個数: 72

約数和(自身を含む): 62506080

約数和(自身を除く): 43618860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9539, 19078, 28617, 38156, 47695, 57234, 85851, 95390, 104929, 114468, 143085, 171702, 190780, 209858, 286170, 314787, 343404, 419716, 429255, 524645, 572340, 629574, 858510, 944361, 1049290, 1259148, 1573935, 1717020, 1888722, 2098580, 3147870, 3777444, 4721805, 6295740, 9443610, 18887220]

約数ペア:

[(1, 18887220), (2, 9443610), (3, 6295740), (4, 4721805), (5, 3777444), (6, 3147870), (9, 2098580), (10, 1888722), (11, 1717020), (12, 1573935), (15, 1259148), (18, 1049290), (20, 944361), (22, 858510), (30, 629574), (33, 572340), (36, 524645), (44, 429255), (45, 419716), (55, 343404), (60, 314787), (66, 286170), (90, 209858), (99, 190780), (110, 171702), (132, 143085), (165, 114468), (180, 104929), (198, 95390), (220, 85851), (330, 57234), (396, 47695), (495, 38156), (660, 28617), (990, 19078), (1980, 9539)]