20706512

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:531

約数の個数: 40

約数和(自身を含む): 41902080

約数和(自身を除く): 21195568

約数列:

[1, 2, 4, 8, 16, 31, 62, 109, 124, 218, 248, 383, 436, 496, 766, 872, 1532, 1744, 3064, 3379, 6128, 6758, 11873, 13516, 23746, 27032, 41747, 47492, 54064, 83494, 94984, 166988, 189968, 333976, 667952, 1294157, 2588314, 5176628, 10353256, 20706512]

約数ペア:

[(1, 20706512), (2, 10353256), (4, 5176628), (8, 2588314), (16, 1294157), (31, 667952), (62, 333976), (109, 189968), (124, 166988), (218, 94984), (248, 83494), (383, 54064), (436, 47492), (496, 41747), (766, 27032), (872, 23746), (1532, 13516), (1744, 11873), (3064, 6758), (3379, 6128)]