21719460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51713}}^1$

素因数の和:51732

約数の個数: 48

約数和(自身を含む): 69503616

約数和(自身を除く): 47784156

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51713, 103426, 155139, 206852, 258565, 310278, 361991, 517130, 620556, 723982, 775695, 1034260, 1085973, 1447964, 1551390, 1809955, 2171946, 3102780, 3619910, 4343892, 5429865, 7239820, 10859730, 21719460]

約数ペア:

[(1, 21719460), (2, 10859730), (3, 7239820), (4, 5429865), (5, 4343892), (6, 3619910), (7, 3102780), (10, 2171946), (12, 1809955), (14, 1551390), (15, 1447964), (20, 1085973), (21, 1034260), (28, 775695), (30, 723982), (35, 620556), (42, 517130), (60, 361991), (70, 310278), (84, 258565), (105, 206852), (140, 155139), (210, 103426), (420, 51713)]