21578900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1063}}^1$

素因数の和:1113

約数の個数: 72

約数和(自身を含む): 55413120

約数和(自身を除く): 33834220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 1015, 1063, 1450, 2030, 2126, 2900, 4060, 4252, 5075, 5315, 7441, 10150, 10630, 14882, 20300, 21260, 26575, 29764, 30827, 37205, 53150, 61654, 74410, 106300, 123308, 148820, 154135, 186025, 215789, 308270, 372050, 431578, 616540, 744100, 770675, 863156, 1078945, 1541350, 2157890, 3082700, 4315780, 5394725, 10789450, 21578900]

約数ペア:

[(1, 21578900), (2, 10789450), (4, 5394725), (5, 4315780), (7, 3082700), (10, 2157890), (14, 1541350), (20, 1078945), (25, 863156), (28, 770675), (29, 744100), (35, 616540), (50, 431578), (58, 372050), (70, 308270), (100, 215789), (116, 186025), (140, 154135), (145, 148820), (175, 123308), (203, 106300), (290, 74410), (350, 61654), (406, 53150), (580, 37205), (700, 30827), (725, 29764), (812, 26575), (1015, 21260), (1063, 20300), (1450, 14882), (2030, 10630), (2126, 10150), (2900, 7441), (4060, 5315), (4252, 5075)]