31617920

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 76377600

約数和(自身を除く): 44759680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 389, 508, 635, 640, 778, 1016, 1270, 1556, 1945, 2032, 2540, 3112, 3890, 4064, 5080, 6224, 7780, 8128, 10160, 12448, 15560, 16256, 20320, 24896, 31120, 40640, 49403, 49792, 62240, 81280, 98806, 124480, 197612, 247015, 248960, 395224, 494030, 790448, 988060, 1580896, 1976120, 3161792, 3952240, 6323584, 7904480, 15808960, 31617920]

約数ペア:

[(1, 31617920), (2, 15808960), (4, 7904480), (5, 6323584), (8, 3952240), (10, 3161792), (16, 1976120), (20, 1580896), (32, 988060), (40, 790448), (64, 494030), (80, 395224), (127, 248960), (128, 247015), (160, 197612), (254, 124480), (320, 98806), (389, 81280), (508, 62240), (635, 49792), (640, 49403), (778, 40640), (1016, 31120), (1270, 24896), (1556, 20320), (1945, 16256), (2032, 15560), (2540, 12448), (3112, 10160), (3890, 8128), (4064, 7780), (5080, 6224)]