21519378

素因数分解:

$2^1\times 3^3\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 49870080

約数和(自身を除く): 28350702

約数列:

[1, 2, 3, 6, 9, 18, 27, 53, 54, 73, 103, 106, 146, 159, 206, 219, 309, 318, 438, 477, 618, 657, 927, 954, 1314, 1431, 1854, 1971, 2781, 2862, 3869, 3942, 5459, 5562, 7519, 7738, 10918, 11607, 15038, 16377, 22557, 23214, 32754, 34821, 45114, 49131, 67671, 69642, 98262, 104463, 135342, 147393, 203013, 208926, 294786, 398507, 406026, 797014, 1195521, 2391042, 3586563, 7173126, 10759689, 21519378]

約数ペア:

[(1, 21519378), (2, 10759689), (3, 7173126), (6, 3586563), (9, 2391042), (18, 1195521), (27, 797014), (53, 406026), (54, 398507), (73, 294786), (103, 208926), (106, 203013), (146, 147393), (159, 135342), (206, 104463), (219, 98262), (309, 69642), (318, 67671), (438, 49131), (477, 45114), (618, 34821), (657, 32754), (927, 23214), (954, 22557), (1314, 16377), (1431, 15038), (1854, 11607), (1971, 10918), (2781, 7738), (2862, 7519), (3869, 5562), (3942, 5459)]