12979780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1439}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 30481920

約数和(自身を除く): 17502140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1439, 1804, 2255, 2878, 4510, 5756, 7195, 9020, 14390, 15829, 28780, 31658, 58999, 63316, 79145, 117998, 158290, 235996, 294995, 316580, 589990, 648989, 1179980, 1297978, 2595956, 3244945, 6489890, 12979780]

約数ペア:

[(1, 12979780), (2, 6489890), (4, 3244945), (5, 2595956), (10, 1297978), (11, 1179980), (20, 648989), (22, 589990), (41, 316580), (44, 294995), (55, 235996), (82, 158290), (110, 117998), (164, 79145), (205, 63316), (220, 58999), (410, 31658), (451, 28780), (820, 15829), (902, 14390), (1439, 9020), (1804, 7195), (2255, 5756), (2878, 4510)]