21508872

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:243

約数の個数: 128

約数和(自身を含む): 68290560

約数和(自身を除く): 46781688

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 103, 113, 132, 154, 168, 206, 226, 231, 264, 308, 309, 339, 412, 452, 462, 616, 618, 678, 721, 791, 824, 904, 924, 1133, 1236, 1243, 1356, 1442, 1582, 1848, 2163, 2266, 2373, 2472, 2486, 2712, 2884, 3164, 3399, 3729, 4326, 4532, 4746, 4972, 5768, 6328, 6798, 7458, 7931, 8652, 8701, 9064, 9492, 9944, 11639, 13596, 14916, 15862, 17304, 17402, 18984, 23278, 23793, 26103, 27192, 29832, 31724, 34804, 34917, 46556, 47586, 52206, 63448, 69608, 69834, 81473, 93112, 95172, 104412, 128029, 139668, 162946, 190344, 208824, 244419, 256058, 279336, 325892, 384087, 488838, 512116, 651784, 768174, 896203, 977676, 1024232, 1536348, 1792406, 1955352, 2688609, 3072696, 3584812, 5377218, 7169624, 10754436, 21508872]

約数ペア:

[(1, 21508872), (2, 10754436), (3, 7169624), (4, 5377218), (6, 3584812), (7, 3072696), (8, 2688609), (11, 1955352), (12, 1792406), (14, 1536348), (21, 1024232), (22, 977676), (24, 896203), (28, 768174), (33, 651784), (42, 512116), (44, 488838), (56, 384087), (66, 325892), (77, 279336), (84, 256058), (88, 244419), (103, 208824), (113, 190344), (132, 162946), (154, 139668), (168, 128029), (206, 104412), (226, 95172), (231, 93112), (264, 81473), (308, 69834), (309, 69608), (339, 63448), (412, 52206), (452, 47586), (462, 46556), (616, 34917), (618, 34804), (678, 31724), (721, 29832), (791, 27192), (824, 26103), (904, 23793), (924, 23278), (1133, 18984), (1236, 17402), (1243, 17304), (1356, 15862), (1442, 14916), (1582, 13596), (1848, 11639), (2163, 9944), (2266, 9492), (2373, 9064), (2472, 8701), (2486, 8652), (2712, 7931), (2884, 7458), (3164, 6798), (3399, 6328), (3729, 5768), (4326, 4972), (4532, 4746)]