18515920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1$

素因数の和:412

約数の個数: 80

約数和(自身を含む): 46604160

約数和(自身を除く): 28088240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 29, 40, 46, 58, 80, 92, 115, 116, 145, 184, 230, 232, 290, 347, 368, 460, 464, 580, 667, 694, 920, 1160, 1334, 1388, 1735, 1840, 2320, 2668, 2776, 3335, 3470, 5336, 5552, 6670, 6940, 7981, 10063, 10672, 13340, 13880, 15962, 20126, 26680, 27760, 31924, 39905, 40252, 50315, 53360, 63848, 79810, 80504, 100630, 127696, 159620, 161008, 201260, 231449, 319240, 402520, 462898, 638480, 805040, 925796, 1157245, 1851592, 2314490, 3703184, 4628980, 9257960, 18515920]

約数ペア:

[(1, 18515920), (2, 9257960), (4, 4628980), (5, 3703184), (8, 2314490), (10, 1851592), (16, 1157245), (20, 925796), (23, 805040), (29, 638480), (40, 462898), (46, 402520), (58, 319240), (80, 231449), (92, 201260), (115, 161008), (116, 159620), (145, 127696), (184, 100630), (230, 80504), (232, 79810), (290, 63848), (347, 53360), (368, 50315), (460, 40252), (464, 39905), (580, 31924), (667, 27760), (694, 26680), (920, 20126), (1160, 15962), (1334, 13880), (1388, 13340), (1735, 10672), (1840, 10063), (2320, 7981), (2668, 6940), (2776, 6670), (3335, 5552), (3470, 5336)]