18806640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3407}}^1$

素因数の和:3446

約数の個数: 80

約数和(自身を含む): 60853248

約数和(自身を除く): 42046608

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3407, 5520, 6814, 10221, 13628, 17035, 20442, 27256, 34070, 40884, 51105, 54512, 68140, 78361, 81768, 102210, 136280, 156722, 163536, 204420, 235083, 272560, 313444, 391805, 408840, 470166, 626888, 783610, 817680, 940332, 1175415, 1253776, 1567220, 1880664, 2350830, 3134440, 3761328, 4701660, 6268880, 9403320, 18806640]

約数ペア:

[(1, 18806640), (2, 9403320), (3, 6268880), (4, 4701660), (5, 3761328), (6, 3134440), (8, 2350830), (10, 1880664), (12, 1567220), (15, 1253776), (16, 1175415), (20, 940332), (23, 817680), (24, 783610), (30, 626888), (40, 470166), (46, 408840), (48, 391805), (60, 313444), (69, 272560), (80, 235083), (92, 204420), (115, 163536), (120, 156722), (138, 136280), (184, 102210), (230, 81768), (240, 78361), (276, 68140), (345, 54512), (368, 51105), (460, 40884), (552, 34070), (690, 27256), (920, 20442), (1104, 17035), (1380, 13628), (1840, 10221), (2760, 6814), (3407, 5520)]