20615840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:334

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35993440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 79, 80, 112, 140, 158, 160, 224, 233, 280, 316, 395, 466, 553, 560, 632, 790, 932, 1106, 1120, 1165, 1264, 1580, 1631, 1864, 2212, 2330, 2528, 2765, 3160, 3262, 3728, 4424, 4660, 5530, 6320, 6524, 7456, 8155, 8848, 9320, 11060, 12640, 13048, 16310, 17696, 18407, 18640, 22120, 26096, 32620, 36814, 37280, 44240, 52192, 65240, 73628, 88480, 92035, 128849, 130480, 147256, 184070, 257698, 260960, 294512, 368140, 515396, 589024, 644245, 736280, 1030792, 1288490, 1472560, 2061584, 2576980, 2945120, 4123168, 5153960, 10307920, 20615840]

約数ペア:

[(1, 20615840), (2, 10307920), (4, 5153960), (5, 4123168), (7, 2945120), (8, 2576980), (10, 2061584), (14, 1472560), (16, 1288490), (20, 1030792), (28, 736280), (32, 644245), (35, 589024), (40, 515396), (56, 368140), (70, 294512), (79, 260960), (80, 257698), (112, 184070), (140, 147256), (158, 130480), (160, 128849), (224, 92035), (233, 88480), (280, 73628), (316, 65240), (395, 52192), (466, 44240), (553, 37280), (560, 36814), (632, 32620), (790, 26096), (932, 22120), (1106, 18640), (1120, 18407), (1165, 17696), (1264, 16310), (1580, 13048), (1631, 12640), (1864, 11060), (2212, 9320), (2330, 8848), (2528, 8155), (2765, 7456), (3160, 6524), (3262, 6320), (3728, 5530), (4424, 4660)]