21561228.000000000

素因数分解:

$2^7\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2477}}^1$

素因数の和:2522

約数の個数: 128

約数和(自身を含む): 545952960

約数和(自身を除く): 368084544

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 17, 22, 24, 32, 33, 34, 44, 48, 51, 64, 66, 68, 88, 96, 102, 128, 132, 136, 176, 187, 192, 204, 264, 272, 352, 374, 384, 408, 528, 544, 561, 704, 748, 816, 1056, 1088, 1122, 1408, 1496, 1632, 2112, 2176, 2244, 2477, 2992, 3264, 4224, 4488, 4954, 5984, 6528, 7431, 8976, 9908, 11968, 14862, 17952, 19816, 23936, 27247, 29724, 35904, 39632, 42109, 54494, 59448, 71808, 79264, 81741, 84218, 108988, 118896, 126327, 158528, 163482, 168436, 217976, 237792, 252654, 317056, 326964, 336872, 435952, 463199, 475584, 505308, 653928, 673744, 871904, 926398, 951168, 1010616, 1307856, 1347488, 1389597, 1743808, 1852796, 2021232, 2615712, 2694976, 2779194, 3487616, 3705592, 4042464, 5231424, 5389952, 5558388, 7411184, 8084928, 10462848, 11116776, 14822368, 16169856, 22233552, 29644736, 44467104, 59289472, 88934208, 177868416]

約数ペア:

[(1, 177868416), (2, 88934208), (3, 59289472), (4, 44467104), (6, 29644736), (8, 22233552), (11, 16169856), (12, 14822368), (16, 11116776), (17, 10462848), (22, 8084928), (24, 7411184), (32, 5558388), (33, 5389952), (34, 5231424), (44, 4042464), (48, 3705592), (51, 3487616), (64, 2779194), (66, 2694976), (68, 2615712), (88, 2021232), (96, 1852796), (102, 1743808), (128, 1389597), (132, 1347488), (136, 1307856), (176, 1010616), (187, 951168), (192, 926398), (204, 871904), (264, 673744), (272, 653928), (352, 505308), (374, 475584), (384, 463199), (408, 435952), (528, 336872), (544, 326964), (561, 317056), (704, 252654), (748, 237792), (816, 217976), (1056, 168436), (1088, 163482), (1122, 158528), (1408, 126327), (1496, 118896), (1632, 108988), (2112, 84218), (2176, 81741), (2244, 79264), (2477, 71808), (2992, 59448), (3264, 54494), (4224, 42109), (4488, 39632), (4954, 35904), (5984, 29724), (6528, 27247), (7431, 23936), (8976, 19816), (9908, 17952), (11968, 14862)]