209979405

素因数分解:

$3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{15101}}^1$

素因数の和:15218

約数の個数: 32

約数和(自身を含む): 376945920

約数和(自身を除く): 166966515

約数列:

[1, 3, 5, 9, 15, 27, 45, 103, 135, 309, 515, 927, 1545, 2781, 4635, 13905, 15101, 45303, 75505, 135909, 226515, 407727, 679545, 1555403, 2038635, 4666209, 7777015, 13998627, 23331045, 41995881, 69993135, 209979405]

約数ペア:

[(1, 209979405), (3, 69993135), (5, 41995881), (9, 23331045), (15, 13998627), (27, 7777015), (45, 4666209), (103, 2038635), (135, 1555403), (309, 679545), (515, 407727), (927, 226515), (1545, 135909), (2781, 75505), (4635, 45303), (13905, 15101)]