20058775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:400

約数の個数: 36

約数和(自身を含む): 28861000

約数和(自身を除く): 8802225

約数列:

[1, 5, 11, 19, 25, 55, 95, 121, 209, 275, 349, 475, 605, 1045, 1745, 2299, 3025, 3839, 5225, 6631, 8725, 11495, 19195, 33155, 42229, 57475, 72941, 95975, 165775, 211145, 364705, 802351, 1055725, 1823525, 4011755, 20058775]

約数ペア:

[(1, 20058775), (5, 4011755), (11, 1823525), (19, 1055725), (25, 802351), (55, 364705), (95, 211145), (121, 165775), (209, 95975), (275, 72941), (349, 57475), (475, 42229), (605, 33155), (1045, 19195), (1745, 11495), (2299, 8725), (3025, 6631), (3839, 5225)]