128758497

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{1031}}^1$

素因数の和:1373

約数の個数: 32

約数和(自身を含む): 207390720

約数和(自身を除く): 78632223

約数列:

[1, 3, 7, 19, 21, 57, 133, 313, 399, 939, 1031, 2191, 3093, 5947, 6573, 7217, 17841, 19589, 21651, 41629, 58767, 124887, 137123, 322703, 411369, 968109, 2258921, 6131357, 6776763, 18394071, 42919499, 128758497]

約数ペア:

[(1, 128758497), (3, 42919499), (7, 18394071), (19, 6776763), (21, 6131357), (57, 2258921), (133, 968109), (313, 411369), (399, 322703), (939, 137123), (1031, 124887), (2191, 58767), (3093, 41629), (5947, 21651), (6573, 19589), (7217, 17841)]