25747280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1303}}^1$

素因数の和:1348

約数の個数: 80

約数和(自身を含む): 67912320

約数和(自身を除く): 42165040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1303, 1520, 1976, 2470, 2606, 3952, 4940, 5212, 6515, 9880, 10424, 13030, 16939, 19760, 20848, 24757, 26060, 33878, 49514, 52120, 67756, 84695, 99028, 104240, 123785, 135512, 169390, 198056, 247570, 271024, 321841, 338780, 396112, 495140, 643682, 677560, 990280, 1287364, 1355120, 1609205, 1980560, 2574728, 3218410, 5149456, 6436820, 12873640, 25747280]

約数ペア:

[(1, 25747280), (2, 12873640), (4, 6436820), (5, 5149456), (8, 3218410), (10, 2574728), (13, 1980560), (16, 1609205), (19, 1355120), (20, 1287364), (26, 990280), (38, 677560), (40, 643682), (52, 495140), (65, 396112), (76, 338780), (80, 321841), (95, 271024), (104, 247570), (130, 198056), (152, 169390), (190, 135512), (208, 123785), (247, 104240), (260, 99028), (304, 84695), (380, 67756), (494, 52120), (520, 49514), (760, 33878), (988, 26060), (1040, 24757), (1235, 20848), (1303, 19760), (1520, 16939), (1976, 13030), (2470, 10424), (2606, 9880), (3952, 6515), (4940, 5212)]