18230920

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1907}}^1$

素因数の和:2157

約数の個数: 32

約数和(自身を含む): 41212800

約数和(自身を除く): 22981880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1907, 1912, 2390, 3814, 4780, 7628, 9535, 9560, 15256, 19070, 38140, 76280, 455773, 911546, 1823092, 2278865, 3646184, 4557730, 9115460, 18230920]

約数ペア:

[(1, 18230920), (2, 9115460), (4, 4557730), (5, 3646184), (8, 2278865), (10, 1823092), (20, 911546), (40, 455773), (239, 76280), (478, 38140), (956, 19070), (1195, 15256), (1907, 9560), (1912, 9535), (2390, 7628), (3814, 4780)]