19481220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9839}}^1$

素因数の和:9865

約数の個数: 72

約数和(自身を含む): 64471680

約数和(自身を除く): 44990460

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, 9839, 19678, 29517, 39356, 49195, 59034, 88551, 98390, 108229, 118068, 147585, 177102, 196780, 216458, 295170, 324687, 354204, 432916, 442755, 541145, 590340, 649374, 885510, 974061, 1082290, 1298748, 1623435, 1771020, 1948122, 2164580, 3246870, 3896244, 4870305, 6493740, 9740610, 19481220]

約数ペア:

[(1, 19481220), (2, 9740610), (3, 6493740), (4, 4870305), (5, 3896244), (6, 3246870), (9, 2164580), (10, 1948122), (11, 1771020), (12, 1623435), (15, 1298748), (18, 1082290), (20, 974061), (22, 885510), (30, 649374), (33, 590340), (36, 541145), (44, 442755), (45, 432916), (55, 354204), (60, 324687), (66, 295170), (90, 216458), (99, 196780), (110, 177102), (132, 147585), (165, 118068), (180, 108229), (198, 98390), (220, 88551), (330, 59034), (396, 49195), (495, 39356), (660, 29517), (990, 19678), (1980, 9839)]