21000700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1579}}^1$

素因数の和:1619

約数の個数: 72

約数和(自身を含む): 54857600

約数和(自身を除く): 33856900

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 133, 140, 175, 190, 266, 350, 380, 475, 532, 665, 700, 950, 1330, 1579, 1900, 2660, 3158, 3325, 6316, 6650, 7895, 11053, 13300, 15790, 22106, 30001, 31580, 39475, 44212, 55265, 60002, 78950, 110530, 120004, 150005, 157900, 210007, 221060, 276325, 300010, 420014, 552650, 600020, 750025, 840028, 1050035, 1105300, 1500050, 2100070, 3000100, 4200140, 5250175, 10500350, 21000700]

約数ペア:

[(1, 21000700), (2, 10500350), (4, 5250175), (5, 4200140), (7, 3000100), (10, 2100070), (14, 1500050), (19, 1105300), (20, 1050035), (25, 840028), (28, 750025), (35, 600020), (38, 552650), (50, 420014), (70, 300010), (76, 276325), (95, 221060), (100, 210007), (133, 157900), (140, 150005), (175, 120004), (190, 110530), (266, 78950), (350, 60002), (380, 55265), (475, 44212), (532, 39475), (665, 31580), (700, 30001), (950, 22106), (1330, 15790), (1579, 13300), (1900, 11053), (2660, 7895), (3158, 6650), (3325, 6316)]