21502712

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 51114240

約数和(自身を除く): 29611528

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 67, 77, 88, 134, 154, 268, 308, 469, 521, 536, 616, 737, 938, 1042, 1474, 1876, 2084, 2948, 3647, 3752, 4168, 5159, 5731, 5896, 7294, 10318, 11462, 14588, 20636, 22924, 29176, 34907, 40117, 41272, 45848, 69814, 80234, 139628, 160468, 244349, 279256, 320936, 383977, 488698, 767954, 977396, 1535908, 1954792, 2687839, 3071816, 5375678, 10751356, 21502712]

約数ペア:

[(1, 21502712), (2, 10751356), (4, 5375678), (7, 3071816), (8, 2687839), (11, 1954792), (14, 1535908), (22, 977396), (28, 767954), (44, 488698), (56, 383977), (67, 320936), (77, 279256), (88, 244349), (134, 160468), (154, 139628), (268, 80234), (308, 69814), (469, 45848), (521, 41272), (536, 40117), (616, 34907), (737, 29176), (938, 22924), (1042, 20636), (1474, 14588), (1876, 11462), (2084, 10318), (2948, 7294), (3647, 5896), (3752, 5731), (4168, 5159)]