20879768

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 53222400

約数和(自身を除く): 32342632

約数列:

[1, 2, 4, 7, 8, 13, 14, 23, 26, 28, 29, 43, 46, 52, 56, 58, 86, 91, 92, 104, 116, 161, 172, 182, 184, 203, 232, 299, 301, 322, 344, 364, 377, 406, 559, 598, 602, 644, 667, 728, 754, 812, 989, 1118, 1196, 1204, 1247, 1288, 1334, 1508, 1624, 1978, 2093, 2236, 2392, 2408, 2494, 2639, 2668, 3016, 3913, 3956, 4186, 4472, 4669, 4988, 5278, 5336, 6923, 7826, 7912, 8372, 8671, 8729, 9338, 9976, 10556, 12857, 13846, 15652, 16211, 16744, 17342, 17458, 18676, 21112, 25714, 27692, 28681, 31304, 32422, 34684, 34916, 37352, 51428, 55384, 57362, 60697, 64844, 69368, 69832, 89999, 102856, 113477, 114724, 121394, 129688, 179998, 200767, 226954, 229448, 242788, 359996, 372853, 401534, 453908, 485576, 719992, 745706, 803068, 907816, 1491412, 1606136, 2609971, 2982824, 5219942, 10439884, 20879768]

約数ペア:

[(1, 20879768), (2, 10439884), (4, 5219942), (7, 2982824), (8, 2609971), (13, 1606136), (14, 1491412), (23, 907816), (26, 803068), (28, 745706), (29, 719992), (43, 485576), (46, 453908), (52, 401534), (56, 372853), (58, 359996), (86, 242788), (91, 229448), (92, 226954), (104, 200767), (116, 179998), (161, 129688), (172, 121394), (182, 114724), (184, 113477), (203, 102856), (232, 89999), (299, 69832), (301, 69368), (322, 64844), (344, 60697), (364, 57362), (377, 55384), (406, 51428), (559, 37352), (598, 34916), (602, 34684), (644, 32422), (667, 31304), (728, 28681), (754, 27692), (812, 25714), (989, 21112), (1118, 18676), (1196, 17458), (1204, 17342), (1247, 16744), (1288, 16211), (1334, 15652), (1508, 13846), (1624, 12857), (1978, 10556), (2093, 9976), (2236, 9338), (2392, 8729), (2408, 8671), (2494, 8372), (2639, 7912), (2668, 7826), (3016, 6923), (3913, 5336), (3956, 5278), (4186, 4988), (4472, 4669)]