21998130

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:224

約数の個数: 128

約数和(自身を含む): 67184640

約数和(自身を除く): 45186510

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 89, 105, 107, 110, 154, 165, 178, 210, 214, 231, 267, 321, 330, 385, 445, 462, 534, 535, 623, 642, 749, 770, 890, 979, 1070, 1155, 1177, 1246, 1335, 1498, 1605, 1869, 1958, 2247, 2310, 2354, 2670, 2937, 3115, 3210, 3531, 3738, 3745, 4494, 4895, 5874, 5885, 6230, 6853, 7062, 7490, 8239, 9345, 9523, 9790, 11235, 11770, 13706, 14685, 16478, 17655, 18690, 19046, 20559, 22470, 24717, 28569, 29370, 34265, 35310, 41118, 41195, 47615, 49434, 57138, 66661, 68530, 82390, 95230, 102795, 104753, 123585, 133322, 142845, 199983, 205590, 209506, 247170, 285690, 314259, 333305, 399966, 523765, 628518, 666610, 733271, 999915, 1047530, 1466542, 1571295, 1999830, 2199813, 3142590, 3666355, 4399626, 7332710, 10999065, 21998130]

約数ペア:

[(1, 21998130), (2, 10999065), (3, 7332710), (5, 4399626), (6, 3666355), (7, 3142590), (10, 2199813), (11, 1999830), (14, 1571295), (15, 1466542), (21, 1047530), (22, 999915), (30, 733271), (33, 666610), (35, 628518), (42, 523765), (55, 399966), (66, 333305), (70, 314259), (77, 285690), (89, 247170), (105, 209506), (107, 205590), (110, 199983), (154, 142845), (165, 133322), (178, 123585), (210, 104753), (214, 102795), (231, 95230), (267, 82390), (321, 68530), (330, 66661), (385, 57138), (445, 49434), (462, 47615), (534, 41195), (535, 41118), (623, 35310), (642, 34265), (749, 29370), (770, 28569), (890, 24717), (979, 22470), (1070, 20559), (1155, 19046), (1177, 18690), (1246, 17655), (1335, 16478), (1498, 14685), (1605, 13706), (1869, 11770), (1958, 11235), (2247, 9790), (2310, 9523), (2354, 9345), (2670, 8239), (2937, 7490), (3115, 7062), (3210, 6853), (3531, 6230), (3738, 5885), (3745, 5874), (4494, 4895)]