1320280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2539}}^1$

素因数の和:2563

約数の個数: 32

約数和(自身を含む): 3200400

約数和(自身を除く): 1880120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2539, 5078, 10156, 12695, 20312, 25390, 33007, 50780, 66014, 101560, 132028, 165035, 264056, 330070, 660140, 1320280]

約数ペア:

[(1, 1320280), (2, 660140), (4, 330070), (5, 264056), (8, 165035), (10, 132028), (13, 101560), (20, 66014), (26, 50780), (40, 33007), (52, 25390), (65, 20312), (104, 12695), (130, 10156), (260, 5078), (520, 2539)]