13280560

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1523}}^1$

素因数の和:1645

約数の個数: 40

約数和(自身を含む): 31181040

約数和(自身を除く): 17900480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1523, 1744, 2180, 3046, 4360, 6092, 7615, 8720, 12184, 15230, 24368, 30460, 60920, 121840, 166007, 332014, 664028, 830035, 1328056, 1660070, 2656112, 3320140, 6640280, 13280560]

約数ペア:

[(1, 13280560), (2, 6640280), (4, 3320140), (5, 2656112), (8, 1660070), (10, 1328056), (16, 830035), (20, 664028), (40, 332014), (80, 166007), (109, 121840), (218, 60920), (436, 30460), (545, 24368), (872, 15230), (1090, 12184), (1523, 8720), (1744, 7615), (2180, 6092), (3046, 4360)]