20807488

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 56

約数和(自身を含む): 45125640

約数和(自身を除く): 24318152

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 89, 104, 178, 208, 281, 356, 416, 562, 712, 832, 1124, 1157, 1424, 2248, 2314, 2848, 3653, 4496, 4628, 5696, 7306, 8992, 9256, 14612, 17984, 18512, 25009, 29224, 37024, 50018, 58448, 74048, 100036, 116896, 200072, 233792, 325117, 400144, 650234, 800288, 1300468, 1600576, 2600936, 5201872, 10403744, 20807488]

約数ペア:

[(1, 20807488), (2, 10403744), (4, 5201872), (8, 2600936), (13, 1600576), (16, 1300468), (26, 800288), (32, 650234), (52, 400144), (64, 325117), (89, 233792), (104, 200072), (178, 116896), (208, 100036), (281, 74048), (356, 58448), (416, 50018), (562, 37024), (712, 29224), (832, 25009), (1124, 18512), (1157, 17984), (1424, 14612), (2248, 9256), (2314, 8992), (2848, 7306), (3653, 5696), (4496, 4628)]