21719560

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6101}}^1$

素因数の和:6201

約数の個数: 32

約数和(自身を含む): 49426200

約数和(自身を除く): 27706640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 6101, 12202, 24404, 30505, 48808, 61010, 122020, 244040, 542989, 1085978, 2171956, 2714945, 4343912, 5429890, 10859780, 21719560]

約数ペア:

[(1, 21719560), (2, 10859780), (4, 5429890), (5, 4343912), (8, 2714945), (10, 2171956), (20, 1085978), (40, 542989), (89, 244040), (178, 122020), (356, 61010), (445, 48808), (712, 30505), (890, 24404), (1780, 12202), (3560, 6101)]