20722020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31397}}^1$

素因数の和:31420

約数の個数: 48

約数和(自身を含む): 63298368

約数和(自身を除く): 42576348

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31397, 62794, 94191, 125588, 156985, 188382, 313970, 345367, 376764, 470955, 627940, 690734, 941910, 1036101, 1381468, 1726835, 1883820, 2072202, 3453670, 4144404, 5180505, 6907340, 10361010, 20722020]

約数ペア:

[(1, 20722020), (2, 10361010), (3, 6907340), (4, 5180505), (5, 4144404), (6, 3453670), (10, 2072202), (11, 1883820), (12, 1726835), (15, 1381468), (20, 1036101), (22, 941910), (30, 690734), (33, 627940), (44, 470955), (55, 376764), (60, 345367), (66, 313970), (110, 188382), (132, 156985), (165, 125588), (220, 94191), (330, 62794), (660, 31397)]