20444528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{433}}^1$

素因数の和:681

約数の個数: 40

約数和(自身を含む): 42945168

約数和(自身を除く): 22500640

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 227, 433, 454, 866, 908, 1732, 1816, 2951, 3464, 3632, 5629, 5902, 6928, 11258, 11804, 22516, 23608, 45032, 47216, 90064, 98291, 196582, 393164, 786328, 1277783, 1572656, 2555566, 5111132, 10222264, 20444528]

約数ペア:

[(1, 20444528), (2, 10222264), (4, 5111132), (8, 2555566), (13, 1572656), (16, 1277783), (26, 786328), (52, 393164), (104, 196582), (208, 98291), (227, 90064), (433, 47216), (454, 45032), (866, 23608), (908, 22516), (1732, 11804), (1816, 11258), (2951, 6928), (3464, 5902), (3632, 5629)]