21263736

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:269

約数の個数: 128

約数和(自身を含む): 64108800

約数和(自身を除く): 42845064

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 19, 24, 26, 34, 38, 39, 51, 52, 57, 68, 76, 78, 102, 104, 114, 136, 152, 156, 204, 211, 221, 228, 247, 312, 323, 408, 422, 442, 456, 494, 633, 646, 663, 741, 844, 884, 969, 988, 1266, 1292, 1326, 1482, 1688, 1768, 1938, 1976, 2532, 2584, 2652, 2743, 2964, 3587, 3876, 4009, 4199, 5064, 5304, 5486, 5928, 7174, 7752, 8018, 8229, 8398, 10761, 10972, 12027, 12597, 14348, 16036, 16458, 16796, 21522, 21944, 24054, 25194, 28696, 32072, 32916, 33592, 43044, 46631, 48108, 50388, 52117, 65832, 68153, 86088, 93262, 96216, 100776, 104234, 136306, 139893, 156351, 186524, 204459, 208468, 272612, 279786, 312702, 373048, 408918, 416936, 545224, 559572, 625404, 817836, 885989, 1119144, 1250808, 1635672, 1771978, 2657967, 3543956, 5315934, 7087912, 10631868, 21263736]

約数ペア:

[(1, 21263736), (2, 10631868), (3, 7087912), (4, 5315934), (6, 3543956), (8, 2657967), (12, 1771978), (13, 1635672), (17, 1250808), (19, 1119144), (24, 885989), (26, 817836), (34, 625404), (38, 559572), (39, 545224), (51, 416936), (52, 408918), (57, 373048), (68, 312702), (76, 279786), (78, 272612), (102, 208468), (104, 204459), (114, 186524), (136, 156351), (152, 139893), (156, 136306), (204, 104234), (211, 100776), (221, 96216), (228, 93262), (247, 86088), (312, 68153), (323, 65832), (408, 52117), (422, 50388), (442, 48108), (456, 46631), (494, 43044), (633, 33592), (646, 32916), (663, 32072), (741, 28696), (844, 25194), (884, 24054), (969, 21944), (988, 21522), (1266, 16796), (1292, 16458), (1326, 16036), (1482, 14348), (1688, 12597), (1768, 12027), (1938, 10972), (1976, 10761), (2532, 8398), (2584, 8229), (2652, 8018), (2743, 7752), (2964, 7174), (3587, 5928), (3876, 5486), (4009, 5304), (4199, 5064)]