21687039220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{39227}}^1$

素因数の和:39613

約数の個数: 96

約数和(自身を含む): 56940226560

約数和(自身を除く): 35253187340

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 359, 385, 718, 770, 1436, 1540, 1795, 2513, 3590, 3949, 5026, 7180, 7898, 10052, 12565, 15796, 19745, 25130, 27643, 39227, 39490, 50260, 55286, 78454, 78980, 110572, 138215, 156908, 196135, 274589, 276430, 392270, 431497, 549178, 552860, 784540, 862994, 1098356, 1372945, 1725988, 2157485, 2745890, 3020479, 4314970, 5491780, 6040958, 8629940, 12081916, 14082493, 15102395, 28164986, 30204790, 56329972, 60409580, 70412465, 98577451, 140824930, 154907423, 197154902, 281649860, 309814846, 394309804, 492887255, 619629692, 774537115, 985774510, 1084351961, 1549074230, 1971549020, 2168703922, 3098148460, 4337407844, 5421759805, 10843519610, 21687039220]

約数ペア:

[(1, 21687039220), (2, 10843519610), (4, 5421759805), (5, 4337407844), (7, 3098148460), (10, 2168703922), (11, 1971549020), (14, 1549074230), (20, 1084351961), (22, 985774510), (28, 774537115), (35, 619629692), (44, 492887255), (55, 394309804), (70, 309814846), (77, 281649860), (110, 197154902), (140, 154907423), (154, 140824930), (220, 98577451), (308, 70412465), (359, 60409580), (385, 56329972), (718, 30204790), (770, 28164986), (1436, 15102395), (1540, 14082493), (1795, 12081916), (2513, 8629940), (3590, 6040958), (3949, 5491780), (5026, 4314970), (7180, 3020479), (7898, 2745890), (10052, 2157485), (12565, 1725988), (15796, 1372945), (19745, 1098356), (25130, 862994), (27643, 784540), (39227, 552860), (39490, 549178), (50260, 431497), (55286, 392270), (78454, 276430), (78980, 274589), (110572, 196135), (138215, 156908)]