321880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{619}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 781200

約数和(自身を除く): 459320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 619, 1238, 2476, 3095, 4952, 6190, 8047, 12380, 16094, 24760, 32188, 40235, 64376, 80470, 160940, 321880]

約数ペア:

[(1, 321880), (2, 160940), (4, 80470), (5, 64376), (8, 40235), (10, 32188), (13, 24760), (20, 16094), (26, 12380), (40, 8047), (52, 6190), (65, 4952), (104, 3095), (130, 2476), (260, 1238), (520, 619)]