18630820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{547}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 42533568

約数和(自身を除く): 23902748

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 524, 547, 655, 1094, 1310, 1703, 2188, 2620, 2735, 3406, 5470, 6812, 7111, 8515, 10940, 14222, 17030, 28444, 34060, 35555, 71110, 71657, 142220, 143314, 286628, 358285, 716570, 931541, 1433140, 1863082, 3726164, 4657705, 9315410, 18630820]

約数ペア:

[(1, 18630820), (2, 9315410), (4, 4657705), (5, 3726164), (10, 1863082), (13, 1433140), (20, 931541), (26, 716570), (52, 358285), (65, 286628), (130, 143314), (131, 142220), (260, 71657), (262, 71110), (524, 35555), (547, 34060), (655, 28444), (1094, 17030), (1310, 14222), (1703, 10940), (2188, 8515), (2620, 7111), (2735, 6812), (3406, 5470)]