18700220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12143}}^1$

素因数の和:12170

約数の個数: 48

約数和(自身を含む): 48964608

約数和(自身を除く): 30264388

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12143, 24286, 48572, 60715, 85001, 121430, 133573, 170002, 242860, 267146, 340004, 425005, 534292, 667865, 850010, 935011, 1335730, 1700020, 1870022, 2671460, 3740044, 4675055, 9350110, 18700220]

約数ペア:

[(1, 18700220), (2, 9350110), (4, 4675055), (5, 3740044), (7, 2671460), (10, 1870022), (11, 1700020), (14, 1335730), (20, 935011), (22, 850010), (28, 667865), (35, 534292), (44, 425005), (55, 340004), (70, 267146), (77, 242860), (110, 170002), (140, 133573), (154, 121430), (220, 85001), (308, 60715), (385, 48572), (770, 24286), (1540, 12143)]