13521820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 30891168

約数和(自身を除く): 17369348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 397, 524, 655, 794, 1310, 1588, 1703, 1985, 2620, 3406, 3970, 5161, 6812, 7940, 8515, 10322, 17030, 20644, 25805, 34060, 51610, 52007, 103220, 104014, 208028, 260035, 520070, 676091, 1040140, 1352182, 2704364, 3380455, 6760910, 13521820]

約数ペア:

[(1, 13521820), (2, 6760910), (4, 3380455), (5, 2704364), (10, 1352182), (13, 1040140), (20, 676091), (26, 520070), (52, 260035), (65, 208028), (130, 104014), (131, 103220), (260, 52007), (262, 51610), (397, 34060), (524, 25805), (655, 20644), (794, 17030), (1310, 10322), (1588, 8515), (1703, 7940), (1985, 6812), (2620, 5161), (3406, 3970)]