20344220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{463}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 46381440

約数和(自身を除く): 26037220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 463, 676, 845, 926, 1690, 1852, 2197, 2315, 3380, 4394, 4630, 6019, 8788, 9260, 10985, 12038, 21970, 24076, 30095, 43940, 60190, 78247, 120380, 156494, 312988, 391235, 782470, 1017211, 1564940, 2034422, 4068844, 5086055, 10172110, 20344220]

約数ペア:

[(1, 20344220), (2, 10172110), (4, 5086055), (5, 4068844), (10, 2034422), (13, 1564940), (20, 1017211), (26, 782470), (52, 391235), (65, 312988), (130, 156494), (169, 120380), (260, 78247), (338, 60190), (463, 43940), (676, 30095), (845, 24076), (926, 21970), (1690, 12038), (1852, 10985), (2197, 9260), (2315, 8788), (3380, 6019), (4394, 4630)]