78838840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 183024000

約数和(自身を除く): 104185160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 79, 122, 158, 244, 305, 316, 395, 409, 488, 610, 632, 790, 818, 1220, 1580, 1636, 2045, 2440, 3160, 3272, 4090, 4819, 8180, 9638, 16360, 19276, 24095, 24949, 32311, 38552, 48190, 49898, 64622, 96380, 99796, 124745, 129244, 161555, 192760, 199592, 249490, 258488, 323110, 498980, 646220, 997960, 1292440, 1970971, 3941942, 7883884, 9854855, 15767768, 19709710, 39419420, 78838840]

約数ペア:

[(1, 78838840), (2, 39419420), (4, 19709710), (5, 15767768), (8, 9854855), (10, 7883884), (20, 3941942), (40, 1970971), (61, 1292440), (79, 997960), (122, 646220), (158, 498980), (244, 323110), (305, 258488), (316, 249490), (395, 199592), (409, 192760), (488, 161555), (610, 129244), (632, 124745), (790, 99796), (818, 96380), (1220, 64622), (1580, 49898), (1636, 48190), (2045, 38552), (2440, 32311), (3160, 24949), (3272, 24095), (4090, 19276), (4819, 16360), (8180, 9638)]