11815820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 25800768

約数和(自身を除く): 13984948

約数列:

[1, 2, 4, 5, 10, 20, 53, 71, 106, 142, 157, 212, 265, 284, 314, 355, 530, 628, 710, 785, 1060, 1420, 1570, 3140, 3763, 7526, 8321, 11147, 15052, 16642, 18815, 22294, 33284, 37630, 41605, 44588, 55735, 75260, 83210, 111470, 166420, 222940, 590791, 1181582, 2363164, 2953955, 5907910, 11815820]

約数ペア:

[(1, 11815820), (2, 5907910), (4, 2953955), (5, 2363164), (10, 1181582), (20, 590791), (53, 222940), (71, 166420), (106, 111470), (142, 83210), (157, 75260), (212, 55735), (265, 44588), (284, 41605), (314, 37630), (355, 33284), (530, 22294), (628, 18815), (710, 16642), (785, 15052), (1060, 11147), (1420, 8321), (1570, 7526), (3140, 3763)]