138863680

素因数分解:

$2^6\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1061}}^1$

素因数の和:1487

約数の個数: 56

約数和(自身を含む): 331790040

約数和(自身を除く): 192926360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 409, 818, 1061, 1636, 2045, 2122, 3272, 4090, 4244, 5305, 6544, 8180, 8488, 10610, 13088, 16360, 16976, 21220, 26176, 32720, 33952, 42440, 65440, 67904, 84880, 130880, 169760, 339520, 433949, 867898, 1735796, 2169745, 3471592, 4339490, 6943184, 8678980, 13886368, 17357960, 27772736, 34715920, 69431840, 138863680]

約数ペア:

[(1, 138863680), (2, 69431840), (4, 34715920), (5, 27772736), (8, 17357960), (10, 13886368), (16, 8678980), (20, 6943184), (32, 4339490), (40, 3471592), (64, 2169745), (80, 1735796), (160, 867898), (320, 433949), (409, 339520), (818, 169760), (1061, 130880), (1636, 84880), (2045, 67904), (2122, 65440), (3272, 42440), (4090, 33952), (4244, 32720), (5305, 26176), (6544, 21220), (8180, 16976), (8488, 16360), (10610, 13088)]