1921513984

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{288689}}^1$

素因数の和:288720

約数の個数: 40

約数和(自身を含む): 4134618180

約数和(自身を除く): 2213104196

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3328, 6656, 288689, 577378, 1154756, 2309512, 3752957, 4619024, 7505914, 9238048, 15011828, 18476096, 30023656, 36952192, 60047312, 73904384, 120094624, 147808768, 240189248, 480378496, 960756992, 1921513984]

約数ペア:

[(1, 1921513984), (2, 960756992), (4, 480378496), (8, 240189248), (13, 147808768), (16, 120094624), (26, 73904384), (32, 60047312), (52, 36952192), (64, 30023656), (104, 18476096), (128, 15011828), (208, 9238048), (256, 7505914), (416, 4619024), (512, 3752957), (832, 2309512), (1664, 1154756), (3328, 577378), (6656, 288689)]