18749913

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 31024896

約数和(自身を除く): 12274983

約数列:

[1, 3, 7, 13, 21, 39, 91, 173, 273, 397, 519, 1191, 1211, 2249, 2779, 3633, 5161, 6747, 8337, 15483, 15743, 36127, 47229, 68681, 108381, 206043, 480767, 892853, 1442301, 2678559, 6249971, 18749913]

約数ペア:

[(1, 18749913), (3, 6249971), (7, 2678559), (13, 1442301), (21, 892853), (39, 480767), (91, 206043), (173, 108381), (273, 68681), (397, 47229), (519, 36127), (1191, 15743), (1211, 15483), (2249, 8337), (2779, 6747), (3633, 5161)]