21007440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:361

約数の個数: 120

約数和(自身を含む): 71379360

約数和(自身を除く): 50371920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 163, 179, 180, 240, 326, 358, 360, 489, 537, 652, 716, 720, 815, 895, 978, 1074, 1304, 1432, 1467, 1611, 1630, 1790, 1956, 2148, 2445, 2608, 2685, 2864, 2934, 3222, 3260, 3580, 3912, 4296, 4890, 5370, 5868, 6444, 6520, 7160, 7335, 7824, 8055, 8592, 9780, 10740, 11736, 12888, 13040, 14320, 14670, 16110, 19560, 21480, 23472, 25776, 29177, 29340, 32220, 39120, 42960, 58354, 58680, 64440, 87531, 116708, 117360, 128880, 145885, 175062, 233416, 262593, 291770, 350124, 437655, 466832, 525186, 583540, 700248, 875310, 1050372, 1167080, 1312965, 1400496, 1750620, 2100744, 2334160, 2625930, 3501240, 4201488, 5251860, 7002480, 10503720, 21007440]

約数ペア:

[(1, 21007440), (2, 10503720), (3, 7002480), (4, 5251860), (5, 4201488), (6, 3501240), (8, 2625930), (9, 2334160), (10, 2100744), (12, 1750620), (15, 1400496), (16, 1312965), (18, 1167080), (20, 1050372), (24, 875310), (30, 700248), (36, 583540), (40, 525186), (45, 466832), (48, 437655), (60, 350124), (72, 291770), (80, 262593), (90, 233416), (120, 175062), (144, 145885), (163, 128880), (179, 117360), (180, 116708), (240, 87531), (326, 64440), (358, 58680), (360, 58354), (489, 42960), (537, 39120), (652, 32220), (716, 29340), (720, 29177), (815, 25776), (895, 23472), (978, 21480), (1074, 19560), (1304, 16110), (1432, 14670), (1467, 14320), (1611, 13040), (1630, 12888), (1790, 11736), (1956, 10740), (2148, 9780), (2445, 8592), (2608, 8055), (2685, 7824), (2864, 7335), (2934, 7160), (3222, 6520), (3260, 6444), (3580, 5868), (3912, 5370), (4296, 4890)]