408032560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{392339}}^1$

素因数の和:392365

約数の個数: 40

約数和(自身を含む): 1021653360

約数和(自身を除く): 613620800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 392339, 784678, 1569356, 1961695, 3138712, 3923390, 5100407, 6277424, 7846780, 10200814, 15693560, 20401628, 25502035, 31387120, 40803256, 51004070, 81606512, 102008140, 204016280, 408032560]

約数ペア:

[(1, 408032560), (2, 204016280), (4, 102008140), (5, 81606512), (8, 51004070), (10, 40803256), (13, 31387120), (16, 25502035), (20, 20401628), (26, 15693560), (40, 10200814), (52, 7846780), (65, 6277424), (80, 5100407), (104, 3923390), (130, 3138712), (208, 1961695), (260, 1569356), (520, 784678), (1040, 392339)]