19190704

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 40309920

約数和(自身を除く): 21119216

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 257, 359, 514, 718, 1028, 1436, 2056, 2872, 3341, 4112, 4667, 5744, 6682, 9334, 13364, 18668, 26728, 37336, 53456, 74672, 92263, 184526, 369052, 738104, 1199419, 1476208, 2398838, 4797676, 9595352, 19190704]

約数ペア:

[(1, 19190704), (2, 9595352), (4, 4797676), (8, 2398838), (13, 1476208), (16, 1199419), (26, 738104), (52, 369052), (104, 184526), (208, 92263), (257, 74672), (359, 53456), (514, 37336), (718, 26728), (1028, 18668), (1436, 13364), (2056, 9334), (2872, 6682), (3341, 5744), (4112, 4667)]