20078240

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:239

約数の個数: 144

約数和(自身を含む): 59725512

約数和(自身を除く): 39647272

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 197, 208, 224, 245, 260, 280, 364, 392, 394, 416, 455, 490, 520, 560, 637, 728, 784, 788, 910, 980, 985, 1040, 1120, 1274, 1379, 1456, 1568, 1576, 1820, 1960, 1970, 2080, 2548, 2561, 2758, 2912, 3152, 3185, 3640, 3920, 3940, 5096, 5122, 5516, 6304, 6370, 6895, 7280, 7840, 7880, 9653, 10192, 10244, 11032, 12740, 12805, 13790, 14560, 15760, 17927, 19306, 20384, 20488, 22064, 25480, 25610, 27580, 31520, 35854, 38612, 40976, 44128, 48265, 50960, 51220, 55160, 71708, 77224, 81952, 89635, 96530, 101920, 102440, 110320, 125489, 143416, 154448, 179270, 193060, 204880, 220640, 250978, 286832, 308896, 358540, 386120, 409760, 501956, 573664, 627445, 717080, 772240, 1003912, 1254890, 1434160, 1544480, 2007824, 2509780, 2868320, 4015648, 5019560, 10039120, 20078240]

約数ペア:

[(1, 20078240), (2, 10039120), (4, 5019560), (5, 4015648), (7, 2868320), (8, 2509780), (10, 2007824), (13, 1544480), (14, 1434160), (16, 1254890), (20, 1003912), (26, 772240), (28, 717080), (32, 627445), (35, 573664), (40, 501956), (49, 409760), (52, 386120), (56, 358540), (65, 308896), (70, 286832), (80, 250978), (91, 220640), (98, 204880), (104, 193060), (112, 179270), (130, 154448), (140, 143416), (160, 125489), (182, 110320), (196, 102440), (197, 101920), (208, 96530), (224, 89635), (245, 81952), (260, 77224), (280, 71708), (364, 55160), (392, 51220), (394, 50960), (416, 48265), (455, 44128), (490, 40976), (520, 38612), (560, 35854), (637, 31520), (728, 27580), (784, 25610), (788, 25480), (910, 22064), (980, 20488), (985, 20384), (1040, 19306), (1120, 17927), (1274, 15760), (1379, 14560), (1456, 13790), (1568, 12805), (1576, 12740), (1820, 11032), (1960, 10244), (1970, 10192), (2080, 9653), (2548, 7880), (2561, 7840), (2758, 7280), (2912, 6895), (3152, 6370), (3185, 6304), (3640, 5516), (3920, 5122), (3940, 5096)]