21416240

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5051}}^1$

素因数の和:5117

約数の個数: 40

約数和(自身を含む): 50742288

約数和(自身を除く): 29326048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5051, 10102, 20204, 25255, 40408, 50510, 80816, 101020, 202040, 267703, 404080, 535406, 1070812, 1338515, 2141624, 2677030, 4283248, 5354060, 10708120, 21416240]

約数ペア:

[(1, 21416240), (2, 10708120), (4, 5354060), (5, 4283248), (8, 2677030), (10, 2141624), (16, 1338515), (20, 1070812), (40, 535406), (53, 404080), (80, 267703), (106, 202040), (212, 101020), (265, 80816), (424, 50510), (530, 40408), (848, 25255), (1060, 20204), (2120, 10102), (4240, 5051)]