18818520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:585

約数の個数: 128

約数和(自身を含む): 66147840

約数和(自身を除く): 47329320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 43, 56, 60, 70, 84, 86, 105, 120, 129, 140, 168, 172, 210, 215, 258, 280, 301, 344, 420, 430, 516, 521, 602, 645, 840, 860, 903, 1032, 1042, 1204, 1290, 1505, 1563, 1720, 1806, 2084, 2408, 2580, 2605, 3010, 3126, 3612, 3647, 4168, 4515, 5160, 5210, 6020, 6252, 7224, 7294, 7815, 9030, 10420, 10941, 12040, 12504, 14588, 15630, 18060, 18235, 20840, 21882, 22403, 29176, 31260, 36120, 36470, 43764, 44806, 54705, 62520, 67209, 72940, 87528, 89612, 109410, 112015, 134418, 145880, 156821, 179224, 218820, 224030, 268836, 313642, 336045, 437640, 448060, 470463, 537672, 627284, 672090, 784105, 896120, 940926, 1254568, 1344180, 1568210, 1881852, 2352315, 2688360, 3136420, 3763704, 4704630, 6272840, 9409260, 18818520]

約数ペア:

[(1, 18818520), (2, 9409260), (3, 6272840), (4, 4704630), (5, 3763704), (6, 3136420), (7, 2688360), (8, 2352315), (10, 1881852), (12, 1568210), (14, 1344180), (15, 1254568), (20, 940926), (21, 896120), (24, 784105), (28, 672090), (30, 627284), (35, 537672), (40, 470463), (42, 448060), (43, 437640), (56, 336045), (60, 313642), (70, 268836), (84, 224030), (86, 218820), (105, 179224), (120, 156821), (129, 145880), (140, 134418), (168, 112015), (172, 109410), (210, 89612), (215, 87528), (258, 72940), (280, 67209), (301, 62520), (344, 54705), (420, 44806), (430, 43764), (516, 36470), (521, 36120), (602, 31260), (645, 29176), (840, 22403), (860, 21882), (903, 20840), (1032, 18235), (1042, 18060), (1204, 15630), (1290, 14588), (1505, 12504), (1563, 12040), (1720, 10941), (1806, 10420), (2084, 9030), (2408, 7815), (2580, 7294), (2605, 7224), (3010, 6252), (3126, 6020), (3612, 5210), (3647, 5160), (4168, 4515)]