21158704

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 80

約数和(自身を含む): 50433280

約数和(自身を除く): 29274576

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 61, 76, 112, 122, 133, 152, 163, 244, 266, 304, 326, 427, 488, 532, 652, 854, 976, 1064, 1141, 1159, 1304, 1708, 2128, 2282, 2318, 2608, 3097, 3416, 4564, 4636, 6194, 6832, 8113, 9128, 9272, 9943, 12388, 16226, 18256, 18544, 19886, 21679, 24776, 32452, 39772, 43358, 49552, 64904, 69601, 79544, 86716, 129808, 139202, 159088, 173432, 188917, 278404, 346864, 377834, 556808, 755668, 1113616, 1322419, 1511336, 2644838, 3022672, 5289676, 10579352, 21158704]

約数ペア:

[(1, 21158704), (2, 10579352), (4, 5289676), (7, 3022672), (8, 2644838), (14, 1511336), (16, 1322419), (19, 1113616), (28, 755668), (38, 556808), (56, 377834), (61, 346864), (76, 278404), (112, 188917), (122, 173432), (133, 159088), (152, 139202), (163, 129808), (244, 86716), (266, 79544), (304, 69601), (326, 64904), (427, 49552), (488, 43358), (532, 39772), (652, 32452), (854, 24776), (976, 21679), (1064, 19886), (1141, 18544), (1159, 18256), (1304, 16226), (1708, 12388), (2128, 9943), (2282, 9272), (2318, 9128), (2608, 8113), (3097, 6832), (3416, 6194), (4564, 4636)]