20429864

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 50752800

約数和(自身を除く): 30322936

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 49, 52, 56, 76, 91, 98, 104, 133, 152, 182, 196, 211, 247, 266, 364, 392, 422, 494, 532, 637, 728, 844, 931, 988, 1064, 1274, 1477, 1688, 1729, 1862, 1976, 2548, 2743, 2954, 3458, 3724, 4009, 5096, 5486, 5908, 6916, 7448, 8018, 10339, 10972, 11816, 12103, 13832, 16036, 19201, 20678, 21944, 24206, 28063, 32072, 38402, 41356, 48412, 52117, 56126, 76804, 82712, 96824, 104234, 112252, 134407, 153608, 196441, 208468, 224504, 268814, 364819, 392882, 416936, 537628, 729638, 785764, 1075256, 1459276, 1571528, 2553733, 2918552, 5107466, 10214932, 20429864]

約数ペア:

[(1, 20429864), (2, 10214932), (4, 5107466), (7, 2918552), (8, 2553733), (13, 1571528), (14, 1459276), (19, 1075256), (26, 785764), (28, 729638), (38, 537628), (49, 416936), (52, 392882), (56, 364819), (76, 268814), (91, 224504), (98, 208468), (104, 196441), (133, 153608), (152, 134407), (182, 112252), (196, 104234), (211, 96824), (247, 82712), (266, 76804), (364, 56126), (392, 52117), (422, 48412), (494, 41356), (532, 38402), (637, 32072), (728, 28063), (844, 24206), (931, 21944), (988, 20678), (1064, 19201), (1274, 16036), (1477, 13832), (1688, 12103), (1729, 11816), (1862, 10972), (1976, 10339), (2548, 8018), (2743, 7448), (2954, 6916), (3458, 5908), (3724, 5486), (4009, 5096)]