19136780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{827}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 24680980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 827, 890, 1157, 1654, 1780, 2314, 3308, 4135, 4628, 5785, 8270, 10751, 11570, 16540, 21502, 23140, 43004, 53755, 73603, 107510, 147206, 215020, 294412, 368015, 736030, 956839, 1472060, 1913678, 3827356, 4784195, 9568390, 19136780]

約数ペア:

[(1, 19136780), (2, 9568390), (4, 4784195), (5, 3827356), (10, 1913678), (13, 1472060), (20, 956839), (26, 736030), (52, 368015), (65, 294412), (89, 215020), (130, 147206), (178, 107510), (260, 73603), (356, 53755), (445, 43004), (827, 23140), (890, 21502), (1157, 16540), (1654, 11570), (1780, 10751), (2314, 8270), (3308, 5785), (4135, 4628)]