19986816

素因数分解:

$2^7\times 3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:144

約数の個数: 128

約数和(自身を含む): 57968640

約数和(自身を除く): 37981824

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 31, 32, 46, 48, 62, 64, 69, 73, 92, 93, 96, 124, 128, 138, 146, 184, 186, 192, 219, 248, 276, 292, 368, 372, 384, 438, 496, 552, 584, 713, 736, 744, 876, 992, 1104, 1168, 1426, 1472, 1488, 1679, 1752, 1984, 2139, 2208, 2263, 2336, 2852, 2944, 2976, 3358, 3504, 3968, 4278, 4416, 4526, 4672, 5037, 5704, 5952, 6716, 6789, 7008, 8556, 8832, 9052, 9344, 10074, 11408, 11904, 13432, 13578, 14016, 17112, 18104, 20148, 22816, 26864, 27156, 28032, 34224, 36208, 40296, 45632, 52049, 53728, 54312, 68448, 72416, 80592, 91264, 104098, 107456, 108624, 136896, 144832, 156147, 161184, 208196, 214912, 217248, 273792, 289664, 312294, 322368, 416392, 434496, 624588, 644736, 832784, 868992, 1249176, 1665568, 2498352, 3331136, 4996704, 6662272, 9993408, 19986816]

約数ペア:

[(1, 19986816), (2, 9993408), (3, 6662272), (4, 4996704), (6, 3331136), (8, 2498352), (12, 1665568), (16, 1249176), (23, 868992), (24, 832784), (31, 644736), (32, 624588), (46, 434496), (48, 416392), (62, 322368), (64, 312294), (69, 289664), (73, 273792), (92, 217248), (93, 214912), (96, 208196), (124, 161184), (128, 156147), (138, 144832), (146, 136896), (184, 108624), (186, 107456), (192, 104098), (219, 91264), (248, 80592), (276, 72416), (292, 68448), (368, 54312), (372, 53728), (384, 52049), (438, 45632), (496, 40296), (552, 36208), (584, 34224), (713, 28032), (736, 27156), (744, 26864), (876, 22816), (992, 20148), (1104, 18104), (1168, 17112), (1426, 14016), (1472, 13578), (1488, 13432), (1679, 11904), (1752, 11408), (1984, 10074), (2139, 9344), (2208, 9052), (2263, 8832), (2336, 8556), (2852, 7008), (2944, 6789), (2976, 6716), (3358, 5952), (3504, 5704), (3968, 5037), (4278, 4672), (4416, 4526)]