2009540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 4656960

約数和(自身を除く): 2647420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 131, 236, 260, 262, 295, 524, 590, 655, 767, 1180, 1310, 1534, 1703, 2620, 3068, 3406, 3835, 6812, 7670, 7729, 8515, 15340, 15458, 17030, 30916, 34060, 38645, 77290, 100477, 154580, 200954, 401908, 502385, 1004770, 2009540]

約数ペア:

[(1, 2009540), (2, 1004770), (4, 502385), (5, 401908), (10, 200954), (13, 154580), (20, 100477), (26, 77290), (52, 38645), (59, 34060), (65, 30916), (118, 17030), (130, 15458), (131, 15340), (236, 8515), (260, 7729), (262, 7670), (295, 6812), (524, 3835), (590, 3406), (655, 3068), (767, 2620), (1180, 1703), (1310, 1534)]