20463968

素因数分解:

$2^5\times 7^2\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:476

約数の個数: 72

約数和(自身を含む): 48492864

約数和(自身を除く): 28028896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 49, 56, 62, 98, 112, 124, 196, 217, 224, 248, 392, 421, 434, 496, 784, 842, 868, 992, 1519, 1568, 1684, 1736, 2947, 3038, 3368, 3472, 5894, 6076, 6736, 6944, 11788, 12152, 13051, 13472, 20629, 23576, 24304, 26102, 41258, 47152, 48608, 52204, 82516, 91357, 94304, 104408, 165032, 182714, 208816, 330064, 365428, 417632, 639499, 660128, 730856, 1278998, 1461712, 2557996, 2923424, 5115992, 10231984, 20463968]

約数ペア:

[(1, 20463968), (2, 10231984), (4, 5115992), (7, 2923424), (8, 2557996), (14, 1461712), (16, 1278998), (28, 730856), (31, 660128), (32, 639499), (49, 417632), (56, 365428), (62, 330064), (98, 208816), (112, 182714), (124, 165032), (196, 104408), (217, 94304), (224, 91357), (248, 82516), (392, 52204), (421, 48608), (434, 47152), (496, 41258), (784, 26102), (842, 24304), (868, 23576), (992, 20629), (1519, 13472), (1568, 13051), (1684, 12152), (1736, 11788), (2947, 6944), (3038, 6736), (3368, 6076), (3472, 5894)]