18879775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1433}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 25605504

約数和(自身を除く): 6725729

約数列:

[1, 5, 17, 25, 31, 85, 155, 425, 527, 775, 1433, 2635, 7165, 13175, 24361, 35825, 44423, 121805, 222115, 609025, 755191, 1110575, 3775955, 18879775]

約数ペア:

[(1, 18879775), (5, 3775955), (17, 1110575), (25, 755191), (31, 609025), (85, 222115), (155, 121805), (425, 44423), (527, 35825), (775, 24361), (1433, 13175), (2635, 7165)]