19418840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{311}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 30900520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 311, 446, 622, 892, 1115, 1244, 1555, 1561, 1784, 2177, 2230, 2488, 3110, 3122, 4354, 4460, 6220, 6244, 7805, 8708, 8920, 10885, 12440, 12488, 15610, 17416, 21770, 31220, 43540, 62440, 69353, 87080, 138706, 277412, 346765, 485471, 554824, 693530, 970942, 1387060, 1941884, 2427355, 2774120, 3883768, 4854710, 9709420, 19418840]

約数ペア:

[(1, 19418840), (2, 9709420), (4, 4854710), (5, 3883768), (7, 2774120), (8, 2427355), (10, 1941884), (14, 1387060), (20, 970942), (28, 693530), (35, 554824), (40, 485471), (56, 346765), (70, 277412), (140, 138706), (223, 87080), (280, 69353), (311, 62440), (446, 43540), (622, 31220), (892, 21770), (1115, 17416), (1244, 15610), (1555, 12488), (1561, 12440), (1784, 10885), (2177, 8920), (2230, 8708), (2488, 7805), (3110, 6244), (3122, 6220), (4354, 4460)]