20768560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15271}}^1$

素因数の和:15301

約数の個数: 40

約数和(自身を含む): 51130656

約数和(自身を除く): 30362096

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15271, 30542, 61084, 76355, 122168, 152710, 244336, 259607, 305420, 519214, 610840, 1038428, 1221680, 1298035, 2076856, 2596070, 4153712, 5192140, 10384280, 20768560]

約数ペア:

[(1, 20768560), (2, 10384280), (4, 5192140), (5, 4153712), (8, 2596070), (10, 2076856), (16, 1298035), (17, 1221680), (20, 1038428), (34, 610840), (40, 519214), (68, 305420), (80, 259607), (85, 244336), (136, 152710), (170, 122168), (272, 76355), (340, 61084), (680, 30542), (1360, 15271)]