21318475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1213}}^1$

素因数の和:1279

約数の個数: 24

約数和(自身を含む): 28601840

約数和(自身を除く): 7283365

約数列:

[1, 5, 19, 25, 37, 95, 185, 475, 703, 925, 1213, 3515, 6065, 17575, 23047, 30325, 44881, 115235, 224405, 576175, 852739, 1122025, 4263695, 21318475]

約数ペア:

[(1, 21318475), (5, 4263695), (19, 1122025), (25, 852739), (37, 576175), (95, 224405), (185, 115235), (475, 44881), (703, 30325), (925, 23047), (1213, 17575), (3515, 6065)]