19988332

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 43606080

約数和(自身を除く): 23617748

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 89, 91, 178, 182, 356, 364, 617, 623, 1157, 1234, 1246, 2314, 2468, 2492, 4319, 4628, 8021, 8099, 8638, 16042, 16198, 17276, 32084, 32396, 54913, 56147, 109826, 112294, 219652, 224588, 384391, 713869, 768782, 1427738, 1537564, 2855476, 4997083, 9994166, 19988332]

約数ペア:

[(1, 19988332), (2, 9994166), (4, 4997083), (7, 2855476), (13, 1537564), (14, 1427738), (26, 768782), (28, 713869), (52, 384391), (89, 224588), (91, 219652), (178, 112294), (182, 109826), (356, 56147), (364, 54913), (617, 32396), (623, 32084), (1157, 17276), (1234, 16198), (1246, 16042), (2314, 8638), (2468, 8099), (2492, 8021), (4319, 4628)]