20951616

素因数分解:

$2^6\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:177

約数の個数: 168

約数和(自身を含む): 68799456

約数和(自身を除く): 47847840

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 21, 24, 28, 32, 34, 42, 48, 49, 51, 56, 64, 68, 84, 96, 98, 102, 112, 119, 131, 136, 147, 168, 192, 196, 204, 224, 238, 262, 272, 294, 336, 357, 392, 393, 408, 448, 476, 524, 544, 588, 672, 714, 784, 786, 816, 833, 917, 952, 1048, 1088, 1176, 1344, 1428, 1568, 1572, 1632, 1666, 1834, 1904, 2096, 2227, 2352, 2499, 2751, 2856, 3136, 3144, 3264, 3332, 3668, 3808, 4192, 4454, 4704, 4998, 5502, 5712, 6288, 6419, 6664, 6681, 7336, 7616, 8384, 8908, 9408, 9996, 11004, 11424, 12576, 12838, 13328, 13362, 14672, 15589, 17816, 19257, 19992, 22008, 22848, 25152, 25676, 26656, 26724, 29344, 31178, 35632, 38514, 39984, 44016, 46767, 51352, 53312, 53448, 58688, 62356, 71264, 77028, 79968, 88032, 93534, 102704, 106896, 109123, 124712, 142528, 154056, 159936, 176064, 187068, 205408, 213792, 218246, 249424, 308112, 327369, 374136, 410816, 427584, 436492, 498848, 616224, 654738, 748272, 872984, 997696, 1232448, 1309476, 1496544, 1745968, 2618952, 2993088, 3491936, 5237904, 6983872, 10475808, 20951616]

約数ペア:

[(1, 20951616), (2, 10475808), (3, 6983872), (4, 5237904), (6, 3491936), (7, 2993088), (8, 2618952), (12, 1745968), (14, 1496544), (16, 1309476), (17, 1232448), (21, 997696), (24, 872984), (28, 748272), (32, 654738), (34, 616224), (42, 498848), (48, 436492), (49, 427584), (51, 410816), (56, 374136), (64, 327369), (68, 308112), (84, 249424), (96, 218246), (98, 213792), (102, 205408), (112, 187068), (119, 176064), (131, 159936), (136, 154056), (147, 142528), (168, 124712), (192, 109123), (196, 106896), (204, 102704), (224, 93534), (238, 88032), (262, 79968), (272, 77028), (294, 71264), (336, 62356), (357, 58688), (392, 53448), (393, 53312), (408, 51352), (448, 46767), (476, 44016), (524, 39984), (544, 38514), (588, 35632), (672, 31178), (714, 29344), (784, 26724), (786, 26656), (816, 25676), (833, 25152), (917, 22848), (952, 22008), (1048, 19992), (1088, 19257), (1176, 17816), (1344, 15589), (1428, 14672), (1568, 13362), (1572, 13328), (1632, 12838), (1666, 12576), (1834, 11424), (1904, 11004), (2096, 9996), (2227, 9408), (2352, 8908), (2499, 8384), (2751, 7616), (2856, 7336), (3136, 6681), (3144, 6664), (3264, 6419), (3332, 6288), (3668, 5712), (3808, 5502), (4192, 4998), (4454, 4704)]