19823440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:429

約数の個数: 120

約数和(自身を含む): 57886920

約数和(自身を除く): 38063480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 389, 392, 455, 490, 520, 560, 637, 728, 778, 784, 910, 980, 1040, 1274, 1456, 1556, 1820, 1945, 1960, 2548, 2723, 3112, 3185, 3640, 3890, 3920, 5057, 5096, 5446, 6224, 6370, 7280, 7780, 10114, 10192, 10892, 12740, 13615, 15560, 19061, 20228, 21784, 25285, 25480, 27230, 31120, 35399, 38122, 40456, 43568, 50570, 50960, 54460, 70798, 76244, 80912, 95305, 101140, 108920, 141596, 152488, 176995, 190610, 202280, 217840, 247793, 283192, 304976, 353990, 381220, 404560, 495586, 566384, 707980, 762440, 991172, 1238965, 1415960, 1524880, 1982344, 2477930, 2831920, 3964688, 4955860, 9911720, 19823440]

約数ペア:

[(1, 19823440), (2, 9911720), (4, 4955860), (5, 3964688), (7, 2831920), (8, 2477930), (10, 1982344), (13, 1524880), (14, 1415960), (16, 1238965), (20, 991172), (26, 762440), (28, 707980), (35, 566384), (40, 495586), (49, 404560), (52, 381220), (56, 353990), (65, 304976), (70, 283192), (80, 247793), (91, 217840), (98, 202280), (104, 190610), (112, 176995), (130, 152488), (140, 141596), (182, 108920), (196, 101140), (208, 95305), (245, 80912), (260, 76244), (280, 70798), (364, 54460), (389, 50960), (392, 50570), (455, 43568), (490, 40456), (520, 38122), (560, 35399), (637, 31120), (728, 27230), (778, 25480), (784, 25285), (910, 21784), (980, 20228), (1040, 19061), (1274, 15560), (1456, 13615), (1556, 12740), (1820, 10892), (1945, 10192), (1960, 10114), (2548, 7780), (2723, 7280), (3112, 6370), (3185, 6224), (3640, 5446), (3890, 5096), (3920, 5057)]