20317040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14939}}^1$

素因数の和:14969

約数の個数: 40

約数和(自身を含む): 50019120

約数和(自身を除く): 29702080

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14939, 29878, 59756, 74695, 119512, 149390, 239024, 253963, 298780, 507926, 597560, 1015852, 1195120, 1269815, 2031704, 2539630, 4063408, 5079260, 10158520, 20317040]

約数ペア:

[(1, 20317040), (2, 10158520), (4, 5079260), (5, 4063408), (8, 2539630), (10, 2031704), (16, 1269815), (17, 1195120), (20, 1015852), (34, 597560), (40, 507926), (68, 298780), (80, 253963), (85, 239024), (136, 149390), (170, 119512), (272, 74695), (340, 59756), (680, 29878), (1360, 14939)]