18671440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13729}}^1$

素因数の和:13759

約数の個数: 40

約数和(自身を含む): 45968040

約数和(自身を除く): 27296600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13729, 27458, 54916, 68645, 109832, 137290, 219664, 233393, 274580, 466786, 549160, 933572, 1098320, 1166965, 1867144, 2333930, 3734288, 4667860, 9335720, 18671440]

約数ペア:

[(1, 18671440), (2, 9335720), (4, 4667860), (5, 3734288), (8, 2333930), (10, 1867144), (16, 1166965), (17, 1098320), (20, 933572), (34, 549160), (40, 466786), (68, 274580), (80, 233393), (85, 219664), (136, 137290), (170, 109832), (272, 68645), (340, 54916), (680, 27458), (1360, 13729)]