31020220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20143}}^1$

素因数の和:20170

約数の個数: 48

約数和(自身を含む): 81220608

約数和(自身を除く): 50200388

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, 20143, 40286, 80572, 100715, 141001, 201430, 221573, 282002, 402860, 443146, 564004, 705005, 886292, 1107865, 1410010, 1551011, 2215730, 2820020, 3102022, 4431460, 6204044, 7755055, 15510110, 31020220]

約数ペア:

[(1, 31020220), (2, 15510110), (4, 7755055), (5, 6204044), (7, 4431460), (10, 3102022), (11, 2820020), (14, 2215730), (20, 1551011), (22, 1410010), (28, 1107865), (35, 886292), (44, 705005), (55, 564004), (70, 443146), (77, 402860), (110, 282002), (140, 221573), (154, 201430), (220, 141001), (308, 100715), (385, 80572), (770, 40286), (1540, 20143)]