12819560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 31525200

約数和(自身を除く): 18705640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 277, 356, 445, 520, 554, 712, 890, 1108, 1157, 1385, 1780, 2216, 2314, 2770, 3560, 3601, 4628, 5540, 5785, 7202, 9256, 11080, 11570, 14404, 18005, 23140, 24653, 28808, 36010, 46280, 49306, 72020, 98612, 123265, 144040, 197224, 246530, 320489, 493060, 640978, 986120, 1281956, 1602445, 2563912, 3204890, 6409780, 12819560]

約数ペア:

[(1, 12819560), (2, 6409780), (4, 3204890), (5, 2563912), (8, 1602445), (10, 1281956), (13, 986120), (20, 640978), (26, 493060), (40, 320489), (52, 246530), (65, 197224), (89, 144040), (104, 123265), (130, 98612), (178, 72020), (260, 49306), (277, 46280), (356, 36010), (445, 28808), (520, 24653), (554, 23140), (712, 18005), (890, 14404), (1108, 11570), (1157, 11080), (1385, 9256), (1780, 7202), (2216, 5785), (2314, 5540), (2770, 4628), (3560, 3601)]