90919760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{16007}}^1$

素因数の和:16091

約数の個数: 40

約数和(自身を含む): 214379136

約数和(自身を除く): 123459376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 16007, 32014, 64028, 80035, 128056, 160070, 256112, 320140, 640280, 1136497, 1280560, 2272994, 4545988, 5682485, 9091976, 11364970, 18183952, 22729940, 45459880, 90919760]

約数ペア:

[(1, 90919760), (2, 45459880), (4, 22729940), (5, 18183952), (8, 11364970), (10, 9091976), (16, 5682485), (20, 4545988), (40, 2272994), (71, 1280560), (80, 1136497), (142, 640280), (284, 320140), (355, 256112), (568, 160070), (710, 128056), (1136, 80035), (1420, 64028), (2840, 32014), (5680, 16007)]