18119440

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 44282880

約数和(自身を除く): 26163440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 61, 79, 80, 94, 122, 158, 188, 235, 244, 305, 316, 376, 395, 470, 488, 610, 632, 752, 790, 940, 976, 1220, 1264, 1580, 1880, 2440, 2867, 3160, 3713, 3760, 4819, 4880, 5734, 6320, 7426, 9638, 11468, 14335, 14852, 18565, 19276, 22936, 24095, 28670, 29704, 37130, 38552, 45872, 48190, 57340, 59408, 74260, 77104, 96380, 114680, 148520, 192760, 226493, 229360, 297040, 385520, 452986, 905972, 1132465, 1811944, 2264930, 3623888, 4529860, 9059720, 18119440]

約数ペア:

[(1, 18119440), (2, 9059720), (4, 4529860), (5, 3623888), (8, 2264930), (10, 1811944), (16, 1132465), (20, 905972), (40, 452986), (47, 385520), (61, 297040), (79, 229360), (80, 226493), (94, 192760), (122, 148520), (158, 114680), (188, 96380), (235, 77104), (244, 74260), (305, 59408), (316, 57340), (376, 48190), (395, 45872), (470, 38552), (488, 37130), (610, 29704), (632, 28670), (752, 24095), (790, 22936), (940, 19276), (976, 18565), (1220, 14852), (1264, 14335), (1580, 11468), (1880, 9638), (2440, 7426), (2867, 6320), (3160, 5734), (3713, 4880), (3760, 4819)]