215000520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{823}}^1$

素因数の和:1155

約数の個数: 128

約数和(自身を含む): 740413440

約数和(自身を除く): 525412920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 311, 420, 622, 823, 840, 933, 1244, 1555, 1646, 1866, 2177, 2469, 2488, 3110, 3292, 3732, 4115, 4354, 4665, 4938, 5761, 6220, 6531, 6584, 7464, 8230, 8708, 9330, 9876, 10885, 11522, 12345, 12440, 13062, 16460, 17283, 17416, 18660, 19752, 21770, 23044, 24690, 26124, 28805, 32655, 32920, 34566, 37320, 43540, 46088, 49380, 52248, 57610, 65310, 69132, 86415, 87080, 98760, 115220, 130620, 138264, 172830, 230440, 255953, 261240, 345660, 511906, 691320, 767859, 1023812, 1279765, 1535718, 1791671, 2047624, 2559530, 3071436, 3583342, 3839295, 5119060, 5375013, 6142872, 7166684, 7678590, 8958355, 10238120, 10750026, 14333368, 15357180, 17916710, 21500052, 26875065, 30714360, 35833420, 43000104, 53750130, 71666840, 107500260, 215000520]

約数ペア:

[(1, 215000520), (2, 107500260), (3, 71666840), (4, 53750130), (5, 43000104), (6, 35833420), (7, 30714360), (8, 26875065), (10, 21500052), (12, 17916710), (14, 15357180), (15, 14333368), (20, 10750026), (21, 10238120), (24, 8958355), (28, 7678590), (30, 7166684), (35, 6142872), (40, 5375013), (42, 5119060), (56, 3839295), (60, 3583342), (70, 3071436), (84, 2559530), (105, 2047624), (120, 1791671), (140, 1535718), (168, 1279765), (210, 1023812), (280, 767859), (311, 691320), (420, 511906), (622, 345660), (823, 261240), (840, 255953), (933, 230440), (1244, 172830), (1555, 138264), (1646, 130620), (1866, 115220), (2177, 98760), (2469, 87080), (2488, 86415), (3110, 69132), (3292, 65310), (3732, 57610), (4115, 52248), (4354, 49380), (4665, 46088), (4938, 43540), (5761, 37320), (6220, 34566), (6531, 32920), (6584, 32655), (7464, 28805), (8230, 26124), (8708, 24690), (9330, 23044), (9876, 21770), (10885, 19752), (11522, 18660), (12345, 17416), (12440, 17283), (13062, 16460)]