521996020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{40973}}^1$

素因数の和:41009

約数の個数: 72

約数和(自身を含む): 1373284584

約数和(自身を除く): 851288564

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6370, 12740, 40973, 81946, 163892, 204865, 286811, 409730, 532649, 573622, 819460, 1065298, 1147244, 1434055, 2007677, 2130596, 2663245, 2868110, 3728543, 4015354, 5326490, 5736220, 7457086, 8030708, 10038385, 10652980, 14914172, 18642715, 20076770, 26099801, 37285430, 40153540, 52199602, 74570860, 104399204, 130499005, 260998010, 521996020]

約数ペア:

[(1, 521996020), (2, 260998010), (4, 130499005), (5, 104399204), (7, 74570860), (10, 52199602), (13, 40153540), (14, 37285430), (20, 26099801), (26, 20076770), (28, 18642715), (35, 14914172), (49, 10652980), (52, 10038385), (65, 8030708), (70, 7457086), (91, 5736220), (98, 5326490), (130, 4015354), (140, 3728543), (182, 2868110), (196, 2663245), (245, 2130596), (260, 2007677), (364, 1434055), (455, 1147244), (490, 1065298), (637, 819460), (910, 573622), (980, 532649), (1274, 409730), (1820, 286811), (2548, 204865), (3185, 163892), (6370, 81946), (12740, 40973)]