20905128

素因数分解:

$2^3\times 3^4\times {\mathrm{32261}}^1$

素因数の和:32279

約数の個数: 40

約数和(自身を含む): 58555530

約数和(自身を除く): 37650402

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 32261, 64522, 96783, 129044, 193566, 258088, 290349, 387132, 580698, 774264, 871047, 1161396, 1742094, 2322792, 2613141, 3484188, 5226282, 6968376, 10452564, 20905128]

約数ペア:

[(1, 20905128), (2, 10452564), (3, 6968376), (4, 5226282), (6, 3484188), (8, 2613141), (9, 2322792), (12, 1742094), (18, 1161396), (24, 871047), (27, 774264), (36, 580698), (54, 387132), (72, 290349), (81, 258088), (108, 193566), (162, 129044), (216, 96783), (324, 64522), (648, 32261)]