18945992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2719}}^1$

素因数の和:2805

約数の個数: 32

約数和(自身を含む): 38841600

約数和(自身を除く): 19895608

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2719, 3484, 5438, 6968, 10876, 21752, 35347, 70694, 141388, 182173, 282776, 364346, 728692, 1457384, 2368249, 4736498, 9472996, 18945992]

約数ペア:

[(1, 18945992), (2, 9472996), (4, 4736498), (8, 2368249), (13, 1457384), (26, 728692), (52, 364346), (67, 282776), (104, 182173), (134, 141388), (268, 70694), (536, 35347), (871, 21752), (1742, 10876), (2719, 6968), (3484, 5438)]