21462172

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:298

約数の個数: 36

約数和(自身を含む): 40325040

約数和(自身を除く): 18862868

約数列:

[1, 2, 4, 19, 38, 76, 89, 167, 178, 334, 356, 361, 668, 722, 1444, 1691, 3173, 3382, 6346, 6764, 12692, 14863, 29726, 32129, 59452, 60287, 64258, 120574, 128516, 241148, 282397, 564794, 1129588, 5365543, 10731086, 21462172]

約数ペア:

[(1, 21462172), (2, 10731086), (4, 5365543), (19, 1129588), (38, 564794), (76, 282397), (89, 241148), (167, 128516), (178, 120574), (334, 64258), (356, 60287), (361, 59452), (668, 32129), (722, 29726), (1444, 14863), (1691, 12692), (3173, 6764), (3382, 6346)]