389905131

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73387}}^1$

素因数の和:73431

約数の個数: 32

約数和(自身を含む): 676343808

約数和(自身を除く): 286438677

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 5313, 73387, 220161, 513709, 807257, 1541127, 1687901, 2421771, 5063703, 5650799, 11815307, 16952397, 18566911, 35445921, 55700733, 129968377, 389905131]

約数ペア:

[(1, 389905131), (3, 129968377), (7, 55700733), (11, 35445921), (21, 18566911), (23, 16952397), (33, 11815307), (69, 5650799), (77, 5063703), (161, 2421771), (231, 1687901), (253, 1541127), (483, 807257), (759, 513709), (1771, 220161), (5313, 73387)]