21921120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1171}}^1$

素因数の和:1205

約数の個数: 144

約数和(自身を含む): 80628912

約数和(自身を除く): 58707792

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1170, 1171, 1248, 1440, 1560, 1872, 2080, 2340, 2342, 3120, 3513, 3744, 4680, 4684, 5855, 6240, 7026, 9360, 9368, 10539, 11710, 14052, 15223, 17565, 18720, 18736, 21078, 23420, 28104, 30446, 35130, 37472, 42156, 45669, 46840, 52695, 56208, 60892, 70260, 76115, 84312, 91338, 93680, 105390, 112416, 121784, 137007, 140520, 152230, 168624, 182676, 187360, 210780, 228345, 243568, 274014, 281040, 304460, 337248, 365352, 421560, 456690, 487136, 548028, 562080, 608920, 685035, 730704, 843120, 913380, 1096056, 1217840, 1370070, 1461408, 1686240, 1826760, 2192112, 2435680, 2740140, 3653520, 4384224, 5480280, 7307040, 10960560, 21921120]

約数ペア:

[(1, 21921120), (2, 10960560), (3, 7307040), (4, 5480280), (5, 4384224), (6, 3653520), (8, 2740140), (9, 2435680), (10, 2192112), (12, 1826760), (13, 1686240), (15, 1461408), (16, 1370070), (18, 1217840), (20, 1096056), (24, 913380), (26, 843120), (30, 730704), (32, 685035), (36, 608920), (39, 562080), (40, 548028), (45, 487136), (48, 456690), (52, 421560), (60, 365352), (65, 337248), (72, 304460), (78, 281040), (80, 274014), (90, 243568), (96, 228345), (104, 210780), (117, 187360), (120, 182676), (130, 168624), (144, 152230), (156, 140520), (160, 137007), (180, 121784), (195, 112416), (208, 105390), (234, 93680), (240, 91338), (260, 84312), (288, 76115), (312, 70260), (360, 60892), (390, 56208), (416, 52695), (468, 46840), (480, 45669), (520, 42156), (585, 37472), (624, 35130), (720, 30446), (780, 28104), (936, 23420), (1040, 21078), (1170, 18736), (1171, 18720), (1248, 17565), (1440, 15223), (1560, 14052), (1872, 11710), (2080, 10539), (2340, 9368), (2342, 9360), (3120, 7026), (3513, 6240), (3744, 5855), (4680, 4684)]