20957040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2239}}^1$

素因数の和:2271

約数の個数: 120

約数和(自身を含む): 75828480

約数和(自身を除く): 54871440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2239, 2340, 3120, 4478, 4680, 6717, 8956, 9360, 11195, 13434, 17912, 20151, 22390, 26868, 29107, 33585, 35824, 40302, 44780, 53736, 58214, 67170, 80604, 87321, 89560, 100755, 107472, 116428, 134340, 145535, 161208, 174642, 179120, 201510, 232856, 261963, 268680, 291070, 322416, 349284, 403020, 436605, 465712, 523926, 537360, 582140, 698568, 806040, 873210, 1047852, 1164280, 1309815, 1397136, 1612080, 1746420, 2095704, 2328560, 2619630, 3492840, 4191408, 5239260, 6985680, 10478520, 20957040]

約数ペア:

[(1, 20957040), (2, 10478520), (3, 6985680), (4, 5239260), (5, 4191408), (6, 3492840), (8, 2619630), (9, 2328560), (10, 2095704), (12, 1746420), (13, 1612080), (15, 1397136), (16, 1309815), (18, 1164280), (20, 1047852), (24, 873210), (26, 806040), (30, 698568), (36, 582140), (39, 537360), (40, 523926), (45, 465712), (48, 436605), (52, 403020), (60, 349284), (65, 322416), (72, 291070), (78, 268680), (80, 261963), (90, 232856), (104, 201510), (117, 179120), (120, 174642), (130, 161208), (144, 145535), (156, 134340), (180, 116428), (195, 107472), (208, 100755), (234, 89560), (240, 87321), (260, 80604), (312, 67170), (360, 58214), (390, 53736), (468, 44780), (520, 40302), (585, 35824), (624, 33585), (720, 29107), (780, 26868), (936, 22390), (1040, 20151), (1170, 17912), (1560, 13434), (1872, 11195), (2239, 9360), (2340, 8956), (3120, 6717), (4478, 4680)]