20753187

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4043

約数の個数: 32

約数和(自身を含む): 35857920

約数和(自身を除く): 15104733

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4001, 5187, 12003, 28007, 52013, 76019, 84021, 156039, 228057, 364091, 532133, 988247, 1092273, 1596399, 2964741, 6917729, 20753187]

約数ペア:

[(1, 20753187), (3, 6917729), (7, 2964741), (13, 1596399), (19, 1092273), (21, 988247), (39, 532133), (57, 364091), (91, 228057), (133, 156039), (247, 84021), (273, 76019), (399, 52013), (741, 28007), (1729, 12003), (4001, 5187)]