20571775

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 32140800

約数和(自身を除く): 11569025

約数列:

[1, 5, 7, 19, 23, 25, 35, 95, 115, 133, 161, 175, 269, 437, 475, 575, 665, 805, 1345, 1883, 2185, 3059, 3325, 4025, 5111, 6187, 6725, 9415, 10925, 15295, 25555, 30935, 35777, 43309, 47075, 76475, 117553, 127775, 154675, 178885, 216545, 587765, 822871, 894425, 1082725, 2938825, 4114355, 20571775]

約数ペア:

[(1, 20571775), (5, 4114355), (7, 2938825), (19, 1082725), (23, 894425), (25, 822871), (35, 587765), (95, 216545), (115, 178885), (133, 154675), (161, 127775), (175, 117553), (269, 76475), (437, 47075), (475, 43309), (575, 35777), (665, 30935), (805, 25555), (1345, 15295), (1883, 10925), (2185, 9415), (3059, 6725), (3325, 6187), (4025, 5111)]