2181400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 5468400

約数和(自身を除く): 3287000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 839, 1300, 1678, 2600, 3356, 4195, 6712, 8390, 10907, 16780, 20975, 21814, 33560, 41950, 43628, 54535, 83900, 87256, 109070, 167800, 218140, 272675, 436280, 545350, 1090700, 2181400]

約数ペア:

[(1, 2181400), (2, 1090700), (4, 545350), (5, 436280), (8, 272675), (10, 218140), (13, 167800), (20, 109070), (25, 87256), (26, 83900), (40, 54535), (50, 43628), (52, 41950), (65, 33560), (100, 21814), (104, 20975), (130, 16780), (200, 10907), (260, 8390), (325, 6712), (520, 4195), (650, 3356), (839, 2600), (1300, 1678)]