28704207

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{887}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 46374912

約数和(自身を除く): 17670705

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 887, 1407, 1541, 2661, 4623, 6209, 10787, 18627, 20401, 32361, 59429, 61203, 142807, 178287, 416003, 428421, 1248009, 1366867, 4100601, 9568069, 28704207]

約数ペア:

[(1, 28704207), (3, 9568069), (7, 4100601), (21, 1366867), (23, 1248009), (67, 428421), (69, 416003), (161, 178287), (201, 142807), (469, 61203), (483, 59429), (887, 32361), (1407, 20401), (1541, 18627), (2661, 10787), (4623, 6209)]