20961408

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:79

約数の個数: 192

約数和(自身を含む): 67197600

約数和(自身を除く): 46236192

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 17, 19, 24, 26, 32, 34, 38, 39, 48, 51, 52, 57, 64, 68, 76, 78, 96, 102, 104, 114, 128, 136, 152, 156, 169, 192, 204, 208, 221, 228, 247, 272, 304, 312, 323, 338, 384, 408, 416, 442, 456, 494, 507, 544, 608, 624, 646, 663, 676, 741, 816, 832, 884, 912, 969, 988, 1014, 1088, 1216, 1248, 1292, 1326, 1352, 1482, 1632, 1664, 1768, 1824, 1938, 1976, 2028, 2176, 2432, 2496, 2584, 2652, 2704, 2873, 2964, 3211, 3264, 3536, 3648, 3876, 3952, 4056, 4199, 4992, 5168, 5304, 5408, 5746, 5928, 6422, 6528, 7072, 7296, 7752, 7904, 8112, 8398, 8619, 9633, 10336, 10608, 10816, 11492, 11856, 12597, 12844, 14144, 15504, 15808, 16224, 16796, 17238, 19266, 20672, 21216, 21632, 22984, 23712, 25194, 25688, 28288, 31008, 31616, 32448, 33592, 34476, 38532, 41344, 42432, 45968, 47424, 50388, 51376, 54587, 62016, 64896, 67184, 68952, 77064, 84864, 91936, 94848, 100776, 102752, 109174, 124032, 134368, 137904, 154128, 163761, 183872, 201552, 205504, 218348, 268736, 275808, 308256, 327522, 367744, 403104, 411008, 436696, 537472, 551616, 616512, 655044, 806208, 873392, 1103232, 1233024, 1310088, 1612416, 1746784, 2620176, 3493568, 5240352, 6987136, 10480704, 20961408]

約数ペア:

[(1, 20961408), (2, 10480704), (3, 6987136), (4, 5240352), (6, 3493568), (8, 2620176), (12, 1746784), (13, 1612416), (16, 1310088), (17, 1233024), (19, 1103232), (24, 873392), (26, 806208), (32, 655044), (34, 616512), (38, 551616), (39, 537472), (48, 436696), (51, 411008), (52, 403104), (57, 367744), (64, 327522), (68, 308256), (76, 275808), (78, 268736), (96, 218348), (102, 205504), (104, 201552), (114, 183872), (128, 163761), (136, 154128), (152, 137904), (156, 134368), (169, 124032), (192, 109174), (204, 102752), (208, 100776), (221, 94848), (228, 91936), (247, 84864), (272, 77064), (304, 68952), (312, 67184), (323, 64896), (338, 62016), (384, 54587), (408, 51376), (416, 50388), (442, 47424), (456, 45968), (494, 42432), (507, 41344), (544, 38532), (608, 34476), (624, 33592), (646, 32448), (663, 31616), (676, 31008), (741, 28288), (816, 25688), (832, 25194), (884, 23712), (912, 22984), (969, 21632), (988, 21216), (1014, 20672), (1088, 19266), (1216, 17238), (1248, 16796), (1292, 16224), (1326, 15808), (1352, 15504), (1482, 14144), (1632, 12844), (1664, 12597), (1768, 11856), (1824, 11492), (1938, 10816), (1976, 10608), (2028, 10336), (2176, 9633), (2432, 8619), (2496, 8398), (2584, 8112), (2652, 7904), (2704, 7752), (2873, 7296), (2964, 7072), (3211, 6528), (3264, 6422), (3536, 5928), (3648, 5746), (3876, 5408), (3952, 5304), (4056, 5168), (4199, 4992)]