28403193

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 19859847

約数列:

[1, 3, 7, 13, 21, 39, 49, 89, 91, 147, 167, 267, 273, 501, 623, 637, 1157, 1169, 1869, 1911, 2171, 3471, 3507, 4361, 6513, 8099, 8183, 13083, 14863, 15197, 24297, 24549, 44589, 45591, 56693, 104041, 106379, 170079, 193219, 312123, 319137, 579657, 728287, 1352533, 2184861, 4057599, 9467731, 28403193]

約数ペア:

[(1, 28403193), (3, 9467731), (7, 4057599), (13, 2184861), (21, 1352533), (39, 728287), (49, 579657), (89, 319137), (91, 312123), (147, 193219), (167, 170079), (267, 106379), (273, 104041), (501, 56693), (623, 45591), (637, 44589), (1157, 24549), (1169, 24297), (1869, 15197), (1911, 14863), (2171, 13083), (3471, 8183), (3507, 8099), (4361, 6513)]