20495860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13309}}^1$

素因数の和:13336

約数の個数: 48

約数和(自身を含む): 53665920

約数和(自身を除く): 33170060

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, 13309, 26618, 53236, 66545, 93163, 133090, 146399, 186326, 266180, 292798, 372652, 465815, 585596, 731995, 931630, 1024793, 1463990, 1863260, 2049586, 2927980, 4099172, 5123965, 10247930, 20495860]

約数ペア:

[(1, 20495860), (2, 10247930), (4, 5123965), (5, 4099172), (7, 2927980), (10, 2049586), (11, 1863260), (14, 1463990), (20, 1024793), (22, 931630), (28, 731995), (35, 585596), (44, 465815), (55, 372652), (70, 292798), (77, 266180), (110, 186326), (140, 146399), (154, 133090), (220, 93163), (308, 66545), (385, 53236), (770, 26618), (1540, 13309)]