12945920

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:425

約数の個数: 80

約数和(自身を含む): 33513480

約数和(自身を除く): 20567560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 389, 416, 512, 520, 640, 778, 832, 1040, 1280, 1556, 1664, 1945, 2080, 2560, 3112, 3328, 3890, 4160, 5057, 6224, 6656, 7780, 8320, 10114, 12448, 15560, 16640, 20228, 24896, 25285, 31120, 33280, 40456, 49792, 50570, 62240, 80912, 99584, 101140, 124480, 161824, 199168, 202280, 248960, 323648, 404560, 497920, 647296, 809120, 995840, 1294592, 1618240, 2589184, 3236480, 6472960, 12945920]

約数ペア:

[(1, 12945920), (2, 6472960), (4, 3236480), (5, 2589184), (8, 1618240), (10, 1294592), (13, 995840), (16, 809120), (20, 647296), (26, 497920), (32, 404560), (40, 323648), (52, 248960), (64, 202280), (65, 199168), (80, 161824), (104, 124480), (128, 101140), (130, 99584), (160, 80912), (208, 62240), (256, 50570), (260, 49792), (320, 40456), (389, 33280), (416, 31120), (512, 25285), (520, 24896), (640, 20228), (778, 16640), (832, 15560), (1040, 12448), (1280, 10114), (1556, 8320), (1664, 7780), (1945, 6656), (2080, 6224), (2560, 5057), (3112, 4160), (3328, 3890)]