21042700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1351

約数の個数: 72

約数和(自身を含む): 54496512

約数和(自身を除く): 33453812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 140, 161, 175, 230, 322, 350, 460, 575, 644, 700, 805, 1150, 1307, 1610, 2300, 2614, 3220, 4025, 5228, 6535, 8050, 9149, 13070, 16100, 18298, 26140, 30061, 32675, 36596, 45745, 60122, 65350, 91490, 120244, 130700, 150305, 182980, 210427, 228725, 300610, 420854, 457450, 601220, 751525, 841708, 914900, 1052135, 1503050, 2104270, 3006100, 4208540, 5260675, 10521350, 21042700]

約数ペア:

[(1, 21042700), (2, 10521350), (4, 5260675), (5, 4208540), (7, 3006100), (10, 2104270), (14, 1503050), (20, 1052135), (23, 914900), (25, 841708), (28, 751525), (35, 601220), (46, 457450), (50, 420854), (70, 300610), (92, 228725), (100, 210427), (115, 182980), (140, 150305), (161, 130700), (175, 120244), (230, 91490), (322, 65350), (350, 60122), (460, 45745), (575, 36596), (644, 32675), (700, 30061), (805, 26140), (1150, 18298), (1307, 16100), (1610, 13070), (2300, 9149), (2614, 8050), (3220, 6535), (4025, 5228)]