20315256

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 60480000

約数和(自身を除く): 40164744

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 23, 24, 26, 38, 39, 46, 52, 57, 69, 76, 78, 92, 104, 114, 138, 149, 152, 156, 184, 228, 247, 276, 298, 299, 312, 437, 447, 456, 494, 552, 596, 598, 741, 874, 894, 897, 988, 1192, 1196, 1311, 1482, 1748, 1788, 1794, 1937, 1976, 2392, 2622, 2831, 2964, 3427, 3496, 3576, 3588, 3874, 5244, 5662, 5681, 5811, 5928, 6854, 7176, 7748, 8493, 10281, 10488, 11324, 11362, 11622, 13708, 15496, 16986, 17043, 20562, 22648, 22724, 23244, 27416, 33972, 34086, 36803, 41124, 44551, 45448, 46488, 65113, 67944, 68172, 73606, 82248, 89102, 110409, 130226, 133653, 136344, 147212, 178204, 195339, 220818, 260452, 267306, 294424, 356408, 390678, 441636, 520904, 534612, 781356, 846469, 883272, 1069224, 1562712, 1692938, 2539407, 3385876, 5078814, 6771752, 10157628, 20315256]

約数ペア:

[(1, 20315256), (2, 10157628), (3, 6771752), (4, 5078814), (6, 3385876), (8, 2539407), (12, 1692938), (13, 1562712), (19, 1069224), (23, 883272), (24, 846469), (26, 781356), (38, 534612), (39, 520904), (46, 441636), (52, 390678), (57, 356408), (69, 294424), (76, 267306), (78, 260452), (92, 220818), (104, 195339), (114, 178204), (138, 147212), (149, 136344), (152, 133653), (156, 130226), (184, 110409), (228, 89102), (247, 82248), (276, 73606), (298, 68172), (299, 67944), (312, 65113), (437, 46488), (447, 45448), (456, 44551), (494, 41124), (552, 36803), (596, 34086), (598, 33972), (741, 27416), (874, 23244), (894, 22724), (897, 22648), (988, 20562), (1192, 17043), (1196, 16986), (1311, 15496), (1482, 13708), (1748, 11622), (1788, 11362), (1794, 11324), (1937, 10488), (1976, 10281), (2392, 8493), (2622, 7748), (2831, 7176), (2964, 6854), (3427, 5928), (3496, 5811), (3576, 5681), (3588, 5662), (3874, 5244)]