1991220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1$

素因数の和:461

約数の個数: 96

約数和(自身を含む): 6967296

約数和(自身を除く): 4976076

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 132, 140, 154, 165, 210, 220, 231, 308, 330, 385, 420, 431, 462, 660, 770, 862, 924, 1155, 1293, 1540, 1724, 2155, 2310, 2586, 3017, 4310, 4620, 4741, 5172, 6034, 6465, 8620, 9051, 9482, 12068, 12930, 14223, 15085, 18102, 18964, 23705, 25860, 28446, 30170, 33187, 36204, 45255, 47410, 56892, 60340, 66374, 71115, 90510, 94820, 99561, 132748, 142230, 165935, 181020, 199122, 284460, 331870, 398244, 497805, 663740, 995610, 1991220]

約数ペア:

[(1, 1991220), (2, 995610), (3, 663740), (4, 497805), (5, 398244), (6, 331870), (7, 284460), (10, 199122), (11, 181020), (12, 165935), (14, 142230), (15, 132748), (20, 99561), (21, 94820), (22, 90510), (28, 71115), (30, 66374), (33, 60340), (35, 56892), (42, 47410), (44, 45255), (55, 36204), (60, 33187), (66, 30170), (70, 28446), (77, 25860), (84, 23705), (105, 18964), (110, 18102), (132, 15085), (140, 14223), (154, 12930), (165, 12068), (210, 9482), (220, 9051), (231, 8620), (308, 6465), (330, 6034), (385, 5172), (420, 4741), (431, 4620), (462, 4310), (660, 3017), (770, 2586), (862, 2310), (924, 2155), (1155, 1724), (1293, 1540)]