19891638

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^3\times {\mathrm{503}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 26889642

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 503, 507, 1006, 1014, 1509, 1521, 2197, 3018, 3042, 4394, 4527, 6539, 6591, 9054, 13078, 13182, 19617, 19773, 39234, 39546, 58851, 85007, 117702, 170014, 255021, 510042, 765063, 1105091, 1530126, 2210182, 3315273, 6630546, 9945819, 19891638]

約数ペア:

[(1, 19891638), (2, 9945819), (3, 6630546), (6, 3315273), (9, 2210182), (13, 1530126), (18, 1105091), (26, 765063), (39, 510042), (78, 255021), (117, 170014), (169, 117702), (234, 85007), (338, 58851), (503, 39546), (507, 39234), (1006, 19773), (1014, 19617), (1509, 13182), (1521, 13078), (2197, 9054), (3018, 6591), (3042, 6539), (4394, 4527)]