20837908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 28836332

約数列:

[1, 2, 4, 7, 13, 14, 19, 23, 26, 28, 38, 46, 52, 76, 91, 92, 131, 133, 161, 182, 247, 262, 266, 299, 322, 364, 437, 494, 524, 532, 598, 644, 874, 917, 988, 1196, 1703, 1729, 1748, 1834, 2093, 2489, 3013, 3059, 3406, 3458, 3668, 4186, 4978, 5681, 6026, 6118, 6812, 6916, 8372, 9956, 11362, 11921, 12052, 12236, 17423, 21091, 22724, 23842, 32357, 34846, 39169, 39767, 42182, 47684, 57247, 64714, 69692, 78338, 79534, 84364, 114494, 129428, 156676, 159068, 226499, 228988, 274183, 400729, 452998, 548366, 744211, 801458, 905996, 1096732, 1488422, 1602916, 2976844, 5209477, 10418954, 20837908]

約数ペア:

[(1, 20837908), (2, 10418954), (4, 5209477), (7, 2976844), (13, 1602916), (14, 1488422), (19, 1096732), (23, 905996), (26, 801458), (28, 744211), (38, 548366), (46, 452998), (52, 400729), (76, 274183), (91, 228988), (92, 226499), (131, 159068), (133, 156676), (161, 129428), (182, 114494), (247, 84364), (262, 79534), (266, 78338), (299, 69692), (322, 64714), (364, 57247), (437, 47684), (494, 42182), (524, 39767), (532, 39169), (598, 34846), (644, 32357), (874, 23842), (917, 22724), (988, 21091), (1196, 17423), (1703, 12236), (1729, 12052), (1748, 11921), (1834, 11362), (2093, 9956), (2489, 8372), (3013, 6916), (3059, 6812), (3406, 6118), (3458, 6026), (3668, 5681), (4186, 4978)]