20509664

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 29487136

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 61, 76, 79, 112, 122, 133, 152, 158, 224, 244, 266, 304, 316, 427, 488, 532, 553, 608, 632, 854, 976, 1064, 1106, 1159, 1264, 1501, 1708, 1952, 2128, 2212, 2318, 2528, 3002, 3416, 4256, 4424, 4636, 4819, 6004, 6832, 8113, 8848, 9272, 9638, 10507, 12008, 13664, 16226, 17696, 18544, 19276, 21014, 24016, 32452, 33733, 37088, 38552, 42028, 48032, 64904, 67466, 77104, 84056, 91561, 129808, 134932, 154208, 168112, 183122, 259616, 269864, 336224, 366244, 539728, 640927, 732488, 1079456, 1281854, 1464976, 2563708, 2929952, 5127416, 10254832, 20509664]

約数ペア:

[(1, 20509664), (2, 10254832), (4, 5127416), (7, 2929952), (8, 2563708), (14, 1464976), (16, 1281854), (19, 1079456), (28, 732488), (32, 640927), (38, 539728), (56, 366244), (61, 336224), (76, 269864), (79, 259616), (112, 183122), (122, 168112), (133, 154208), (152, 134932), (158, 129808), (224, 91561), (244, 84056), (266, 77104), (304, 67466), (316, 64904), (427, 48032), (488, 42028), (532, 38552), (553, 37088), (608, 33733), (632, 32452), (854, 24016), (976, 21014), (1064, 19276), (1106, 18544), (1159, 17696), (1264, 16226), (1501, 13664), (1708, 12008), (1952, 10507), (2128, 9638), (2212, 9272), (2318, 8848), (2528, 8113), (3002, 6832), (3416, 6004), (4256, 4819), (4424, 4636)]