19640140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75539}}^1$

素因数の和:75561

約数の個数: 24

約数和(自身を含む): 44417520

約数和(自身を除く): 24777380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75539, 151078, 302156, 377695, 755390, 982007, 1510780, 1964014, 3928028, 4910035, 9820070, 19640140]

約数ペア:

[(1, 19640140), (2, 9820070), (4, 4910035), (5, 3928028), (10, 1964014), (13, 1510780), (20, 982007), (26, 755390), (52, 377695), (65, 302156), (130, 151078), (260, 75539)]