20399488

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 22783232

約数列:

[1, 2, 4, 8, 16, 31, 32, 53, 62, 64, 97, 106, 124, 128, 194, 212, 248, 388, 424, 496, 776, 848, 992, 1552, 1643, 1696, 1984, 3007, 3104, 3286, 3392, 3968, 5141, 6014, 6208, 6572, 6784, 10282, 12028, 12416, 13144, 20564, 24056, 26288, 41128, 48112, 52576, 82256, 96224, 105152, 159371, 164512, 192448, 210304, 318742, 329024, 384896, 637484, 658048, 1274968, 2549936, 5099872, 10199744, 20399488]

約数ペア:

[(1, 20399488), (2, 10199744), (4, 5099872), (8, 2549936), (16, 1274968), (31, 658048), (32, 637484), (53, 384896), (62, 329024), (64, 318742), (97, 210304), (106, 192448), (124, 164512), (128, 159371), (194, 105152), (212, 96224), (248, 82256), (388, 52576), (424, 48112), (496, 41128), (776, 26288), (848, 24056), (992, 20564), (1552, 13144), (1643, 12416), (1696, 12028), (1984, 10282), (3007, 6784), (3104, 6572), (3286, 6208), (3392, 6014), (3968, 5141)]